diff --git a/gcc/rust/checks/errors/feature/rust-feature-gate.cc b/gcc/rust/checks/errors/feature/rust-feature-gate.cc
index b2a6b6c6481..448fa18f21d 100644
--- a/gcc/rust/checks/errors/feature/rust-feature-gate.cc
+++ b/gcc/rust/checks/errors/feature/rust-feature-gate.cc
@@ -146,6 +146,24 @@ FeatureGate::check_may_dangle_attribute (
     }
 }
 
+void
+FeatureGate::check_lang_item_attribute (
+  const std::vector<AST::Attribute> &attributes)
+{
+  for (const AST::Attribute &attr : attributes)
+    {
+      const auto &str_path = attr.get_path ().as_string ();
+      bool is_lang_item = str_path == Values::Attributes::LANG
+			  && attr.has_attr_input ()
+			  && attr.get_attr_input ().get_attr_input_type ()
+			       == AST::AttrInput::AttrInputType::LITERAL;
+
+      if (is_lang_item)
+	gate (Feature::Name::LANG_ITEMS, attr.get_locus (),
+	      "lang items are subject to change");
+    }
+}
+
 void
 FeatureGate::visit (AST::MacroRulesDefinition &rules_def)
 {
@@ -158,6 +176,8 @@ FeatureGate::visit (AST::Function &function)
   if (!function.is_external ())
     check_rustc_attri (function.get_outer_attrs ());
 
+  check_lang_item_attribute (function.get_outer_attrs ());
+
   AST::DefaultASTVisitor::visit (function);
 }
 
@@ -186,6 +206,7 @@ FeatureGate::visit (AST::Trait &trait)
   if (trait.is_auto ())
     gate (Feature::Name::OPTIN_BUILTIN_TRAITS, trait.get_locus (),
 	  "auto traits are experimental and possibly buggy");
+  check_lang_item_attribute (trait.get_outer_attrs ());
   AST::DefaultASTVisitor::visit (trait);
 }
 
@@ -243,4 +264,32 @@ FeatureGate::visit (AST::UseTreeGlob &use)
   // #[feature(prelude_import)]
 }
 
+void
+FeatureGate::visit (AST::StructStruct &struct_item)
+{
+  check_lang_item_attribute (struct_item.get_outer_attrs ());
+  AST::DefaultASTVisitor::visit (struct_item);
+}
+
+void
+FeatureGate::visit (AST::TraitItemType &trait_item_type)
+{
+  check_lang_item_attribute (trait_item_type.get_outer_attrs ());
+  AST::DefaultASTVisitor::visit (trait_item_type);
+}
+
+void
+FeatureGate::visit (AST::Enum &enum_item)
+{
+  check_lang_item_attribute (enum_item.get_outer_attrs ());
+  AST::DefaultASTVisitor::visit (enum_item);
+}
+
+void
+FeatureGate::visit (AST::EnumItem &enum_variant)
+{
+  check_lang_item_attribute (enum_variant.get_outer_attrs ());
+  AST::DefaultASTVisitor::visit (enum_variant);
+}
+
 } // namespace Rust
diff --git a/gcc/rust/checks/errors/feature/rust-feature-gate.h b/gcc/rust/checks/errors/feature/rust-feature-gate.h
index f1011e53224..c8ab66b753d 100644
--- a/gcc/rust/checks/errors/feature/rust-feature-gate.h
+++ b/gcc/rust/checks/errors/feature/rust-feature-gate.h
@@ -47,12 +47,18 @@ class FeatureGate : public AST::DefaultASTVisitor
   void visit (AST::ExternBlock &block) override;
   void visit (AST::MacroRulesDefinition &rules_def) override;
   void visit (AST::RangePattern &pattern) override;
+  void visit (AST::StructStruct &struct_item) override;
+  void visit (AST::TraitItemType &trait_item_type) override;
+  void visit (AST::Enum &enum_item) override;
+  void visit (AST::EnumItem &enum_variant) override;
 
 private:
   void gate (Feature::Name name, location_t loc, const std::string &error_msg);
   void check_rustc_attri (const std::vector<AST::Attribute> &attributes);
   void
   check_may_dangle_attribute (const std::vector<AST::Attribute> &attributes);
+  void
+  check_lang_item_attribute (const std::vector<AST::Attribute> &attributes);
   std::set<Feature::Name> valid_features;
 };
 } // namespace Rust
diff --git a/gcc/testsuite/rust/borrowck/reference.rs b/gcc/testsuite/rust/borrowck/reference.rs
index c4b9f7d9d89..1bef9388a1d 100644
--- a/gcc/testsuite/rust/borrowck/reference.rs
+++ b/gcc/testsuite/rust/borrowck/reference.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-frust-compile-until=compilation -frust-borrowcheck -fdiagnostics-show-caret -fdiagnostics-show-line-numbers" }
 // { dg-enable-nn-line-numbers "" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/borrowck/tmp.rs b/gcc/testsuite/rust/borrowck/tmp.rs
index 545a278df05..210153f0209 100644
--- a/gcc/testsuite/rust/borrowck/tmp.rs
+++ b/gcc/testsuite/rust/borrowck/tmp.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-frust-compile-until=compilation -frust-borrowcheck -fdiagnostics-show-caret -fdiagnostics-show-line-numbers" }
 // { dg-enable-nn-line-numbers "" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/additional-trait-bounds1.rs b/gcc/testsuite/rust/compile/additional-trait-bounds1.rs
index 449a72fe461..c629aba4be5 100644
--- a/gcc/testsuite/rust/compile/additional-trait-bounds1.rs
+++ b/gcc/testsuite/rust/compile/additional-trait-bounds1.rs
@@ -1,4 +1,4 @@
-#![feature(optin_builtin_traits)]
+#![feature(optin_builtin_traits, lang_items)]
 
 pub unsafe auto trait Send {}
 #[lang = "sync"]
diff --git a/gcc/testsuite/rust/compile/additional-trait-bounds2.rs b/gcc/testsuite/rust/compile/additional-trait-bounds2.rs
index 1c49b750319..7140b3b23b3 100644
--- a/gcc/testsuite/rust/compile/additional-trait-bounds2.rs
+++ b/gcc/testsuite/rust/compile/additional-trait-bounds2.rs
@@ -1,4 +1,4 @@
-#![feature(optin_builtin_traits)]
+#![feature(optin_builtin_traits, lang_items)]
 
 pub unsafe auto trait Send {}
 #[lang = "sync"]
diff --git a/gcc/testsuite/rust/compile/additional-trait-bounds2nr2.rs b/gcc/testsuite/rust/compile/additional-trait-bounds2nr2.rs
index 1c49b750319..7140b3b23b3 100644
--- a/gcc/testsuite/rust/compile/additional-trait-bounds2nr2.rs
+++ b/gcc/testsuite/rust/compile/additional-trait-bounds2nr2.rs
@@ -1,4 +1,4 @@
-#![feature(optin_builtin_traits)]
+#![feature(optin_builtin_traits, lang_items)]
 
 pub unsafe auto trait Send {}
 #[lang = "sync"]
diff --git a/gcc/testsuite/rust/compile/auto_traits1.rs b/gcc/testsuite/rust/compile/auto_traits1.rs
index 192052d4815..e9f5e0aa65f 100644
--- a/gcc/testsuite/rust/compile/auto_traits1.rs
+++ b/gcc/testsuite/rust/compile/auto_traits1.rs
@@ -1,6 +1,6 @@
 // { dg-additional-options "-frust-compile-until=typecheck" }
 
-#![feature(optin_builtin_traits)]
+#![feature(optin_builtin_traits, lang_items)]
 
 pub unsafe auto trait Send {}
 #[lang = "sync"]
diff --git a/gcc/testsuite/rust/compile/auto_traits2.rs b/gcc/testsuite/rust/compile/auto_traits2.rs
index 7004761eb15..eda22b50376 100644
--- a/gcc/testsuite/rust/compile/auto_traits2.rs
+++ b/gcc/testsuite/rust/compile/auto_traits2.rs
@@ -1,4 +1,4 @@
-#![feature(optin_builtin_traits)]
+#![feature(optin_builtin_traits, lang_items)]
 
 pub unsafe auto trait Send {}
 #[lang = "sync"]
diff --git a/gcc/testsuite/rust/compile/bad-rpit1.rs b/gcc/testsuite/rust/compile/bad-rpit1.rs
index d8c21b11c64..c728e36078a 100644
--- a/gcc/testsuite/rust/compile/bad-rpit1.rs
+++ b/gcc/testsuite/rust/compile/bad-rpit1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/black_box.rs b/gcc/testsuite/rust/compile/black_box.rs
index 80615af5b5d..35d9e9e1853 100644
--- a/gcc/testsuite/rust/compile/black_box.rs
+++ b/gcc/testsuite/rust/compile/black_box.rs
@@ -1,5 +1,5 @@
 // { dg-options "-fdump-tree-gimple" }
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[lang = "sized"]
 pub trait Sized {}
diff --git a/gcc/testsuite/rust/compile/bounds1.rs b/gcc/testsuite/rust/compile/bounds1.rs
index a02e6f63eb9..5891f7112d5 100644
--- a/gcc/testsuite/rust/compile/bounds1.rs
+++ b/gcc/testsuite/rust/compile/bounds1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs b/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs
index 5f62a59a04b..62e7c10aa99 100644
--- a/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs
+++ b/gcc/testsuite/rust/compile/box_syntax_feature_gate.rs
@@ -1,4 +1,5 @@
 // { dg-options "-frust-compile-until=lowering" }
+#![feature(lang_items)]
 #[lang = "owned_box"]
 pub struct Box<T>;
 
diff --git a/gcc/testsuite/rust/compile/bug-with-default-generic.rs b/gcc/testsuite/rust/compile/bug-with-default-generic.rs
index 25f46a09c7d..3f31fccf7de 100644
--- a/gcc/testsuite/rust/compile/bug-with-default-generic.rs
+++ b/gcc/testsuite/rust/compile/bug-with-default-generic.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/canonical_paths1.rs b/gcc/testsuite/rust/compile/canonical_paths1.rs
index bd6f3b27547..f80d6e688ad 100644
--- a/gcc/testsuite/rust/compile/canonical_paths1.rs
+++ b/gcc/testsuite/rust/compile/canonical_paths1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w -fdump-tree-gimple -frust-crate=example" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/cast_generics.rs b/gcc/testsuite/rust/compile/cast_generics.rs
index 469fa942ea0..6da91933cca 100644
--- a/gcc/testsuite/rust/compile/cast_generics.rs
+++ b/gcc/testsuite/rust/compile/cast_generics.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/closure_no_type_anno.rs b/gcc/testsuite/rust/compile/closure_no_type_anno.rs
index b647da7b595..2aab16fc29d 100644
--- a/gcc/testsuite/rust/compile/closure_no_type_anno.rs
+++ b/gcc/testsuite/rust/compile/closure_no_type_anno.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/cmp1.rs b/gcc/testsuite/rust/compile/cmp1.rs
index 4da5b1c01fc..db1589e66ff 100644
--- a/gcc/testsuite/rust/compile/cmp1.rs
+++ b/gcc/testsuite/rust/compile/cmp1.rs
@@ -1,6 +1,7 @@
 // { dg-options "-w" }
 // taken from https://github.com/rust-lang/rust/blob/e1884a8e3c3e813aada8254edfa120e85bf5ffca/library/core/src/cmp.rs#L98
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/complex_qualified_path_in_expr.rs b/gcc/testsuite/rust/compile/complex_qualified_path_in_expr.rs
index 5036410aca5..85bdaf07088 100644
--- a/gcc/testsuite/rust/compile/complex_qualified_path_in_expr.rs
+++ b/gcc/testsuite/rust/compile/complex_qualified_path_in_expr.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const-issue1440.rs b/gcc/testsuite/rust/compile/const-issue1440.rs
index 3a2989cc8d0..43748cf2457 100644
--- a/gcc/testsuite/rust/compile/const-issue1440.rs
+++ b/gcc/testsuite/rust/compile/const-issue1440.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_1.rs b/gcc/testsuite/rust/compile/const_generics_1.rs
index 5d4ca64c81d..b22e07ed57b 100644
--- a/gcc/testsuite/rust/compile/const_generics_1.rs
+++ b/gcc/testsuite/rust/compile/const_generics_1.rs
@@ -3,6 +3,7 @@
 // There are errors about unused generic parameters, but we can't handle that yet.
 // Still, this code is invalid Rust.
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_10.rs b/gcc/testsuite/rust/compile/const_generics_10.rs
index 7e3bc86bd9f..13001269ee1 100644
--- a/gcc/testsuite/rust/compile/const_generics_10.rs
+++ b/gcc/testsuite/rust/compile/const_generics_10.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_11.rs b/gcc/testsuite/rust/compile/const_generics_11.rs
index de902ee0d06..381d9f404eb 100644
--- a/gcc/testsuite/rust/compile/const_generics_11.rs
+++ b/gcc/testsuite/rust/compile/const_generics_11.rs
@@ -1,5 +1,5 @@
 // { dg-options "-w" }
-
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_12.rs b/gcc/testsuite/rust/compile/const_generics_12.rs
index a17c52594b1..88b151f16dd 100644
--- a/gcc/testsuite/rust/compile/const_generics_12.rs
+++ b/gcc/testsuite/rust/compile/const_generics_12.rs
@@ -1,5 +1,5 @@
 // { dg-options "-w" }
-
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_13.rs b/gcc/testsuite/rust/compile/const_generics_13.rs
index 20dd0b906ce..bf8e78e903f 100644
--- a/gcc/testsuite/rust/compile/const_generics_13.rs
+++ b/gcc/testsuite/rust/compile/const_generics_13.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_14.rs b/gcc/testsuite/rust/compile/const_generics_14.rs
index 4d52efb16bb..e0d206f646d 100644
--- a/gcc/testsuite/rust/compile/const_generics_14.rs
+++ b/gcc/testsuite/rust/compile/const_generics_14.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_15.rs b/gcc/testsuite/rust/compile/const_generics_15.rs
index a160abf59f1..158548ce33b 100644
--- a/gcc/testsuite/rust/compile/const_generics_15.rs
+++ b/gcc/testsuite/rust/compile/const_generics_15.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_16.rs b/gcc/testsuite/rust/compile/const_generics_16.rs
index 060dbda79de..467be6a68af 100644
--- a/gcc/testsuite/rust/compile/const_generics_16.rs
+++ b/gcc/testsuite/rust/compile/const_generics_16.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_18.rs b/gcc/testsuite/rust/compile/const_generics_18.rs
index 8bcc26158b4..09bb8607e7b 100644
--- a/gcc/testsuite/rust/compile/const_generics_18.rs
+++ b/gcc/testsuite/rust/compile/const_generics_18.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_19.rs b/gcc/testsuite/rust/compile/const_generics_19.rs
index b0932ae6027..73c1419a8a6 100644
--- a/gcc/testsuite/rust/compile/const_generics_19.rs
+++ b/gcc/testsuite/rust/compile/const_generics_19.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_3.rs b/gcc/testsuite/rust/compile/const_generics_3.rs
index 3415f176b2f..528cf6949af 100644
--- a/gcc/testsuite/rust/compile/const_generics_3.rs
+++ b/gcc/testsuite/rust/compile/const_generics_3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_8.rs b/gcc/testsuite/rust/compile/const_generics_8.rs
index ce5e1b59bd7..32b7a19a469 100644
--- a/gcc/testsuite/rust/compile/const_generics_8.rs
+++ b/gcc/testsuite/rust/compile/const_generics_8.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/const_generics_9.rs b/gcc/testsuite/rust/compile/const_generics_9.rs
index 98e2d3ff068..a3f7485e016 100644
--- a/gcc/testsuite/rust/compile/const_generics_9.rs
+++ b/gcc/testsuite/rust/compile/const_generics_9.rs
@@ -1,5 +1,5 @@
 // { dg-options "-w" }
-
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/derive-debug1.rs b/gcc/testsuite/rust/compile/derive-debug1.rs
index 59273743eb9..f69be0df5f1 100644
--- a/gcc/testsuite/rust/compile/derive-debug1.rs
+++ b/gcc/testsuite/rust/compile/derive-debug1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/derive-default1.rs b/gcc/testsuite/rust/compile/derive-default1.rs
index 902c65eca58..ad31d5a4c6d 100644
--- a/gcc/testsuite/rust/compile/derive-default1.rs
+++ b/gcc/testsuite/rust/compile/derive-default1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[derive(Default)]
 struct Foo { _a: i32, _b: i64, _c: u8 }
 
diff --git a/gcc/testsuite/rust/compile/derive-eq-invalid.rs b/gcc/testsuite/rust/compile/derive-eq-invalid.rs
index b0bf856486d..47fac78193f 100644
--- a/gcc/testsuite/rust/compile/derive-eq-invalid.rs
+++ b/gcc/testsuite/rust/compile/derive-eq-invalid.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 mod core {
     mod cmp {
         #[lang = "eq"]
diff --git a/gcc/testsuite/rust/compile/derive-hash1.rs b/gcc/testsuite/rust/compile/derive-hash1.rs
index 80e1e2d2bda..cdcc9b1afac 100644
--- a/gcc/testsuite/rust/compile/derive-hash1.rs
+++ b/gcc/testsuite/rust/compile/derive-hash1.rs
@@ -1,4 +1,4 @@
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/derive-partialeq1.rs b/gcc/testsuite/rust/compile/derive-partialeq1.rs
index 35e33fbc25c..fbeb0548e8c 100644
--- a/gcc/testsuite/rust/compile/derive-partialeq1.rs
+++ b/gcc/testsuite/rust/compile/derive-partialeq1.rs
@@ -1,4 +1,4 @@
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/derive_clone_enum1.rs b/gcc/testsuite/rust/compile/derive_clone_enum1.rs
index 947dc5c694c..7dc0a8086d9 100644
--- a/gcc/testsuite/rust/compile/derive_clone_enum1.rs
+++ b/gcc/testsuite/rust/compile/derive_clone_enum1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "clone"]
 trait Clone {
     pub fn clone(&self) -> Self;
diff --git a/gcc/testsuite/rust/compile/derive_clone_enum2.rs b/gcc/testsuite/rust/compile/derive_clone_enum2.rs
index c7a4ad5fd64..6f5b29aca8b 100644
--- a/gcc/testsuite/rust/compile/derive_clone_enum2.rs
+++ b/gcc/testsuite/rust/compile/derive_clone_enum2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "clone"]
 trait Clone {
     pub fn clone(&self) -> Self;
diff --git a/gcc/testsuite/rust/compile/derive_clone_enum3.rs b/gcc/testsuite/rust/compile/derive_clone_enum3.rs
index 92fd6eeeb2b..7c76ab22858 100644
--- a/gcc/testsuite/rust/compile/derive_clone_enum3.rs
+++ b/gcc/testsuite/rust/compile/derive_clone_enum3.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "clone"]
 trait Clone {
     pub fn clone(&self) -> Self;
diff --git a/gcc/testsuite/rust/compile/derive_macro1.rs b/gcc/testsuite/rust/compile/derive_macro1.rs
index 8c42abae2d1..df7c8e386a2 100644
--- a/gcc/testsuite/rust/compile/derive_macro1.rs
+++ b/gcc/testsuite/rust/compile/derive_macro1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/derive_macro3.rs b/gcc/testsuite/rust/compile/derive_macro3.rs
index ad40cae94b5..37b1d505f1d 100644
--- a/gcc/testsuite/rust/compile/derive_macro3.rs
+++ b/gcc/testsuite/rust/compile/derive_macro3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/derive_macro4.rs b/gcc/testsuite/rust/compile/derive_macro4.rs
index 8bf1bcaf5f7..74290196b39 100644
--- a/gcc/testsuite/rust/compile/derive_macro4.rs
+++ b/gcc/testsuite/rust/compile/derive_macro4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/derive_macro6.rs b/gcc/testsuite/rust/compile/derive_macro6.rs
index 412144d5917..d575ff108b4 100644
--- a/gcc/testsuite/rust/compile/derive_macro6.rs
+++ b/gcc/testsuite/rust/compile/derive_macro6.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/derive_partial_ord1.rs b/gcc/testsuite/rust/compile/derive_partial_ord1.rs
index eeca62da078..4d26de566c6 100644
--- a/gcc/testsuite/rust/compile/derive_partial_ord1.rs
+++ b/gcc/testsuite/rust/compile/derive_partial_ord1.rs
@@ -1,6 +1,6 @@
 // { dg-additional-options "-w" }
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/compile/expand_macro_qual_path_in_type.rs b/gcc/testsuite/rust/compile/expand_macro_qual_path_in_type.rs
index 2d60197e15c..16d120feb1b 100644
--- a/gcc/testsuite/rust/compile/expand_macro_qual_path_in_type.rs
+++ b/gcc/testsuite/rust/compile/expand_macro_qual_path_in_type.rs
@@ -1,5 +1,6 @@
 // this SEGVs in lowering for now
 // { dg-additional-options "-frust-compile-until=nameresolution" }
+#![feature(lang_items)]
 
 macro_rules! forward_ref_binop {
     (impl $imp:ident, $method:ident for $t:ty, $u:ty) => {
diff --git a/gcc/testsuite/rust/compile/expected_type_args2.rs b/gcc/testsuite/rust/compile/expected_type_args2.rs
index 11a70bec6d4..22702e34a44 100644
--- a/gcc/testsuite/rust/compile/expected_type_args2.rs
+++ b/gcc/testsuite/rust/compile/expected_type_args2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/expected_type_args3.rs b/gcc/testsuite/rust/compile/expected_type_args3.rs
index 7003f7abcf7..0916ec945d6 100644
--- a/gcc/testsuite/rust/compile/expected_type_args3.rs
+++ b/gcc/testsuite/rust/compile/expected_type_args3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/extern_generics.rs b/gcc/testsuite/rust/compile/extern_generics.rs
index 26f97a64ff5..0312626cc4d 100644
--- a/gcc/testsuite/rust/compile/extern_generics.rs
+++ b/gcc/testsuite/rust/compile/extern_generics.rs
@@ -1,4 +1,5 @@
-#[lang="sized"]
+#![feature(lang_items)]
+#[lang = "sized"]
 trait Sized {}
 
 
diff --git a/gcc/testsuite/rust/compile/for-loop1.rs b/gcc/testsuite/rust/compile/for-loop1.rs
index 21e0399161b..d42cf673895 100644
--- a/gcc/testsuite/rust/compile/for-loop1.rs
+++ b/gcc/testsuite/rust/compile/for-loop1.rs
@@ -1,5 +1,5 @@
 // { dg-output "loop\r*\nloop\r*\n" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/compile/for-loop2.rs b/gcc/testsuite/rust/compile/for-loop2.rs
index a0ad06613f5..680fd86a0b5 100644
--- a/gcc/testsuite/rust/compile/for-loop2.rs
+++ b/gcc/testsuite/rust/compile/for-loop2.rs
@@ -1,5 +1,5 @@
 // { dg-output "1\r*\n2\r*\n" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/compile/format_args_basic_expansion.rs b/gcc/testsuite/rust/compile/format_args_basic_expansion.rs
index cedb62c53d9..59101acc86a 100644
--- a/gcc/testsuite/rust/compile/format_args_basic_expansion.rs
+++ b/gcc/testsuite/rust/compile/format_args_basic_expansion.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! format_args {
diff --git a/gcc/testsuite/rust/compile/format_args_concat.rs b/gcc/testsuite/rust/compile/format_args_concat.rs
index b180667e9e6..695cde6572b 100644
--- a/gcc/testsuite/rust/compile/format_args_concat.rs
+++ b/gcc/testsuite/rust/compile/format_args_concat.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! format_args {
diff --git a/gcc/testsuite/rust/compile/format_args_extra_comma.rs b/gcc/testsuite/rust/compile/format_args_extra_comma.rs
index dc48a3a7d2d..5b8fee512d2 100644
--- a/gcc/testsuite/rust/compile/format_args_extra_comma.rs
+++ b/gcc/testsuite/rust/compile/format_args_extra_comma.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! format_args {
diff --git a/gcc/testsuite/rust/compile/generics1.rs b/gcc/testsuite/rust/compile/generics1.rs
index 9e440af9e3c..cf3c9e4c32b 100644
--- a/gcc/testsuite/rust/compile/generics1.rs
+++ b/gcc/testsuite/rust/compile/generics1.rs
@@ -1,5 +1,6 @@
 // { dg-error "mismatched types, expected .i32. but got .i8." "" { target *-*-* } 0 }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics11.rs b/gcc/testsuite/rust/compile/generics11.rs
index 10b5880d5bc..7202baf7fba 100644
--- a/gcc/testsuite/rust/compile/generics11.rs
+++ b/gcc/testsuite/rust/compile/generics11.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics12.rs b/gcc/testsuite/rust/compile/generics12.rs
index b32f56679ca..21613fb6556 100644
--- a/gcc/testsuite/rust/compile/generics12.rs
+++ b/gcc/testsuite/rust/compile/generics12.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics2.rs b/gcc/testsuite/rust/compile/generics2.rs
index 4c95fd1a23c..0ed8a5fb90b 100644
--- a/gcc/testsuite/rust/compile/generics2.rs
+++ b/gcc/testsuite/rust/compile/generics2.rs
@@ -1,5 +1,6 @@
 // { dg-error "mismatched types, expected .i32. but got .i8." "" { target *-*-* } 0 }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics3.rs b/gcc/testsuite/rust/compile/generics3.rs
index 514d713a954..112a2475747 100644
--- a/gcc/testsuite/rust/compile/generics3.rs
+++ b/gcc/testsuite/rust/compile/generics3.rs
@@ -1,4 +1,5 @@
 // { dg-error "mismatched types, expected .i32. but got .i8." "" { target *-*-* } 0 }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics4.rs b/gcc/testsuite/rust/compile/generics4.rs
index c4dbc432c07..e8333d6c304 100644
--- a/gcc/testsuite/rust/compile/generics4.rs
+++ b/gcc/testsuite/rust/compile/generics4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics6.rs b/gcc/testsuite/rust/compile/generics6.rs
index d77c559db21..67029cd04a1 100644
--- a/gcc/testsuite/rust/compile/generics6.rs
+++ b/gcc/testsuite/rust/compile/generics6.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics7.rs b/gcc/testsuite/rust/compile/generics7.rs
index dcedead4b9f..e2283a43c9a 100644
--- a/gcc/testsuite/rust/compile/generics7.rs
+++ b/gcc/testsuite/rust/compile/generics7.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/generics8.rs b/gcc/testsuite/rust/compile/generics8.rs
index 2d30a9ec602..b38b277a142 100644
--- a/gcc/testsuite/rust/compile/generics8.rs
+++ b/gcc/testsuite/rust/compile/generics8.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/if_let_expr.rs b/gcc/testsuite/rust/compile/if_let_expr.rs
index b0879e5fadb..407abd45e6b 100644
--- a/gcc/testsuite/rust/compile/if_let_expr.rs
+++ b/gcc/testsuite/rust/compile/if_let_expr.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/impl_fnptr.rs b/gcc/testsuite/rust/compile/impl_fnptr.rs
index 20c9d88dc1a..e7c1bb1e5ef 100644
--- a/gcc/testsuite/rust/compile/impl_fnptr.rs
+++ b/gcc/testsuite/rust/compile/impl_fnptr.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/impl_trait_diag.rs b/gcc/testsuite/rust/compile/impl_trait_diag.rs
index 54a0cd220a3..e78d2f5e045 100644
--- a/gcc/testsuite/rust/compile/impl_trait_diag.rs
+++ b/gcc/testsuite/rust/compile/impl_trait_diag.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/impl_trait_generic_arg.rs b/gcc/testsuite/rust/compile/impl_trait_generic_arg.rs
index ecdb08803b4..a304bd69336 100644
--- a/gcc/testsuite/rust/compile/impl_trait_generic_arg.rs
+++ b/gcc/testsuite/rust/compile/impl_trait_generic_arg.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1005.rs b/gcc/testsuite/rust/compile/issue-1005.rs
index 15d4bef08c2..4c51b30d863 100644
--- a/gcc/testsuite/rust/compile/issue-1005.rs
+++ b/gcc/testsuite/rust/compile/issue-1005.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1019.rs b/gcc/testsuite/rust/compile/issue-1019.rs
index 1f77ba9d31d..5bf786c56d8 100644
--- a/gcc/testsuite/rust/compile/issue-1019.rs
+++ b/gcc/testsuite/rust/compile/issue-1019.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1031.rs b/gcc/testsuite/rust/compile/issue-1031.rs
index cd1da47362a..785573a10bc 100644
--- a/gcc/testsuite/rust/compile/issue-1031.rs
+++ b/gcc/testsuite/rust/compile/issue-1031.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1034.rs b/gcc/testsuite/rust/compile/issue-1034.rs
index d40005ec5d9..ef5f7c713c1 100644
--- a/gcc/testsuite/rust/compile/issue-1034.rs
+++ b/gcc/testsuite/rust/compile/issue-1034.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1128.rs b/gcc/testsuite/rust/compile/issue-1128.rs
index 8960ebbea63..de469199296 100644
--- a/gcc/testsuite/rust/compile/issue-1128.rs
+++ b/gcc/testsuite/rust/compile/issue-1128.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1129-2.rs b/gcc/testsuite/rust/compile/issue-1129-2.rs
index cfe01b5b4db..4b4f004a0e1 100644
--- a/gcc/testsuite/rust/compile/issue-1129-2.rs
+++ b/gcc/testsuite/rust/compile/issue-1129-2.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1130.rs b/gcc/testsuite/rust/compile/issue-1130.rs
index 115e6aad2f1..0219ed23f44 100644
--- a/gcc/testsuite/rust/compile/issue-1130.rs
+++ b/gcc/testsuite/rust/compile/issue-1130.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1131.rs b/gcc/testsuite/rust/compile/issue-1131.rs
index 86eeb98453a..c014e736894 100644
--- a/gcc/testsuite/rust/compile/issue-1131.rs
+++ b/gcc/testsuite/rust/compile/issue-1131.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1165.rs b/gcc/testsuite/rust/compile/issue-1165.rs
index a6378239519..ce57ebf7fdc 100644
--- a/gcc/testsuite/rust/compile/issue-1165.rs
+++ b/gcc/testsuite/rust/compile/issue-1165.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1173.rs b/gcc/testsuite/rust/compile/issue-1173.rs
index a8fd93eea1b..59b0adf67de 100644
--- a/gcc/testsuite/rust/compile/issue-1173.rs
+++ b/gcc/testsuite/rust/compile/issue-1173.rs
@@ -2,6 +2,7 @@
 
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1235.rs b/gcc/testsuite/rust/compile/issue-1235.rs
index 7c85ac4a6b0..6376e9e6a98 100644
--- a/gcc/testsuite/rust/compile/issue-1235.rs
+++ b/gcc/testsuite/rust/compile/issue-1235.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1237.rs b/gcc/testsuite/rust/compile/issue-1237.rs
index 79b60b07b52..506a6bf7059 100644
--- a/gcc/testsuite/rust/compile/issue-1237.rs
+++ b/gcc/testsuite/rust/compile/issue-1237.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1289.rs b/gcc/testsuite/rust/compile/issue-1289.rs
index 9251d79290b..58ab0b66df3 100644
--- a/gcc/testsuite/rust/compile/issue-1289.rs
+++ b/gcc/testsuite/rust/compile/issue-1289.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1383.rs b/gcc/testsuite/rust/compile/issue-1383.rs
index dac4b2a1255..f8ccd577b62 100644
--- a/gcc/testsuite/rust/compile/issue-1383.rs
+++ b/gcc/testsuite/rust/compile/issue-1383.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1447.rs b/gcc/testsuite/rust/compile/issue-1447.rs
index 6d58f7a6eea..afeef17151f 100644
--- a/gcc/testsuite/rust/compile/issue-1447.rs
+++ b/gcc/testsuite/rust/compile/issue-1447.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1483.rs b/gcc/testsuite/rust/compile/issue-1483.rs
index eda7e139283..96ca72e4368 100644
--- a/gcc/testsuite/rust/compile/issue-1483.rs
+++ b/gcc/testsuite/rust/compile/issue-1483.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1485.rs b/gcc/testsuite/rust/compile/issue-1485.rs
index a0cd5a0f1f9..958fcd14db9 100644
--- a/gcc/testsuite/rust/compile/issue-1485.rs
+++ b/gcc/testsuite/rust/compile/issue-1485.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1487.rs b/gcc/testsuite/rust/compile/issue-1487.rs
index 4a4d759ef2e..dd346517f40 100644
--- a/gcc/testsuite/rust/compile/issue-1487.rs
+++ b/gcc/testsuite/rust/compile/issue-1487.rs
@@ -1,4 +1,6 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1589.rs b/gcc/testsuite/rust/compile/issue-1589.rs
index 1dd7a45286c..dd7b4c0893b 100644
--- a/gcc/testsuite/rust/compile/issue-1589.rs
+++ b/gcc/testsuite/rust/compile/issue-1589.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1725-1.rs b/gcc/testsuite/rust/compile/issue-1725-1.rs
index a02e6f63eb9..5891f7112d5 100644
--- a/gcc/testsuite/rust/compile/issue-1725-1.rs
+++ b/gcc/testsuite/rust/compile/issue-1725-1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1725-2.rs b/gcc/testsuite/rust/compile/issue-1725-2.rs
index d6a2d686c05..3386f279ed0 100644
--- a/gcc/testsuite/rust/compile/issue-1725-2.rs
+++ b/gcc/testsuite/rust/compile/issue-1725-2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1786.rs b/gcc/testsuite/rust/compile/issue-1786.rs
index 1c46fee6a87..e4f94bd87e2 100644
--- a/gcc/testsuite/rust/compile/issue-1786.rs
+++ b/gcc/testsuite/rust/compile/issue-1786.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1893.rs b/gcc/testsuite/rust/compile/issue-1893.rs
index 46c53e9ce7a..47cde451e26 100644
--- a/gcc/testsuite/rust/compile/issue-1893.rs
+++ b/gcc/testsuite/rust/compile/issue-1893.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1901.rs b/gcc/testsuite/rust/compile/issue-1901.rs
index b43e34f702f..110b939dacd 100644
--- a/gcc/testsuite/rust/compile/issue-1901.rs
+++ b/gcc/testsuite/rust/compile/issue-1901.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1930.rs b/gcc/testsuite/rust/compile/issue-1930.rs
index 071b3dae21c..5eea2291d7e 100644
--- a/gcc/testsuite/rust/compile/issue-1930.rs
+++ b/gcc/testsuite/rust/compile/issue-1930.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-1981.rs b/gcc/testsuite/rust/compile/issue-1981.rs
index de9588c60ad..c71cecf38f2 100644
--- a/gcc/testsuite/rust/compile/issue-1981.rs
+++ b/gcc/testsuite/rust/compile/issue-1981.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2015.rs b/gcc/testsuite/rust/compile/issue-2015.rs
index 7e0365163e5..57630960f73 100644
--- a/gcc/testsuite/rust/compile/issue-2015.rs
+++ b/gcc/testsuite/rust/compile/issue-2015.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2019-1.rs b/gcc/testsuite/rust/compile/issue-2019-1.rs
index e91e347b2ea..e3174b13cf3 100644
--- a/gcc/testsuite/rust/compile/issue-2019-1.rs
+++ b/gcc/testsuite/rust/compile/issue-2019-1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2019-2.rs b/gcc/testsuite/rust/compile/issue-2019-2.rs
index 9f7c0c01bbe..eefe44d35bb 100644
--- a/gcc/testsuite/rust/compile/issue-2019-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2019-2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2019-3.rs b/gcc/testsuite/rust/compile/issue-2019-3.rs
index c95ce43083a..7f00d8239ed 100644
--- a/gcc/testsuite/rust/compile/issue-2019-3.rs
+++ b/gcc/testsuite/rust/compile/issue-2019-3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2036.rs b/gcc/testsuite/rust/compile/issue-2036.rs
index 8701b204fd3..03b8ed05b29 100644
--- a/gcc/testsuite/rust/compile/issue-2036.rs
+++ b/gcc/testsuite/rust/compile/issue-2036.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2037.rs b/gcc/testsuite/rust/compile/issue-2037.rs
index 8adcb975109..0d929d52790 100644
--- a/gcc/testsuite/rust/compile/issue-2037.rs
+++ b/gcc/testsuite/rust/compile/issue-2037.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2070.rs b/gcc/testsuite/rust/compile/issue-2070.rs
index 981e59926fb..f4dc3600536 100644
--- a/gcc/testsuite/rust/compile/issue-2070.rs
+++ b/gcc/testsuite/rust/compile/issue-2070.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2105.rs b/gcc/testsuite/rust/compile/issue-2105.rs
index 28f170e51cf..4446b267848 100644
--- a/gcc/testsuite/rust/compile/issue-2105.rs
+++ b/gcc/testsuite/rust/compile/issue-2105.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2106.rs b/gcc/testsuite/rust/compile/issue-2106.rs
index 4af57c86652..a75d21b8ebb 100644
--- a/gcc/testsuite/rust/compile/issue-2106.rs
+++ b/gcc/testsuite/rust/compile/issue-2106.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2135.rs b/gcc/testsuite/rust/compile/issue-2135.rs
index 9f4d3e1b6c1..e2d5ed26e68 100644
--- a/gcc/testsuite/rust/compile/issue-2135.rs
+++ b/gcc/testsuite/rust/compile/issue-2135.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2136-1.rs b/gcc/testsuite/rust/compile/issue-2136-1.rs
index f0af551f87e..eee8a682793 100644
--- a/gcc/testsuite/rust/compile/issue-2136-1.rs
+++ b/gcc/testsuite/rust/compile/issue-2136-1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2136-2.rs b/gcc/testsuite/rust/compile/issue-2136-2.rs
index b25820dadfb..b30c9d24d86 100644
--- a/gcc/testsuite/rust/compile/issue-2136-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2136-2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2139.rs b/gcc/testsuite/rust/compile/issue-2139.rs
index 65f82f39f40..ba3736fb3d9 100644
--- a/gcc/testsuite/rust/compile/issue-2139.rs
+++ b/gcc/testsuite/rust/compile/issue-2139.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2142.rs b/gcc/testsuite/rust/compile/issue-2142.rs
index a3ec228c0e1..e4c0c926ebe 100644
--- a/gcc/testsuite/rust/compile/issue-2142.rs
+++ b/gcc/testsuite/rust/compile/issue-2142.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2165.rs b/gcc/testsuite/rust/compile/issue-2165.rs
index 5bbde65928b..38288e988f5 100644
--- a/gcc/testsuite/rust/compile/issue-2165.rs
+++ b/gcc/testsuite/rust/compile/issue-2165.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2166.rs b/gcc/testsuite/rust/compile/issue-2166.rs
index 142ed178e7e..d9e07a60e46 100644
--- a/gcc/testsuite/rust/compile/issue-2166.rs
+++ b/gcc/testsuite/rust/compile/issue-2166.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2190-1.rs b/gcc/testsuite/rust/compile/issue-2190-1.rs
index 927f90d6c9b..ad0f168e730 100644
--- a/gcc/testsuite/rust/compile/issue-2190-1.rs
+++ b/gcc/testsuite/rust/compile/issue-2190-1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2190-2.rs b/gcc/testsuite/rust/compile/issue-2190-2.rs
index 1c933386aa4..c1abfb617c3 100644
--- a/gcc/testsuite/rust/compile/issue-2190-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2190-2.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2195.rs b/gcc/testsuite/rust/compile/issue-2195.rs
index fc158c39bb4..0a917a86a2c 100644
--- a/gcc/testsuite/rust/compile/issue-2195.rs
+++ b/gcc/testsuite/rust/compile/issue-2195.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2238.rs b/gcc/testsuite/rust/compile/issue-2238.rs
index 6a43a13dfe7..6bbbca4a6de 100644
--- a/gcc/testsuite/rust/compile/issue-2238.rs
+++ b/gcc/testsuite/rust/compile/issue-2238.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2304.rs b/gcc/testsuite/rust/compile/issue-2304.rs
index 83130336ebe..cef8fc80739 100644
--- a/gcc/testsuite/rust/compile/issue-2304.rs
+++ b/gcc/testsuite/rust/compile/issue-2304.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2323.rs b/gcc/testsuite/rust/compile/issue-2323.rs
index 02a3f90b4d8..2c69214ab08 100644
--- a/gcc/testsuite/rust/compile/issue-2323.rs
+++ b/gcc/testsuite/rust/compile/issue-2323.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2330.rs b/gcc/testsuite/rust/compile/issue-2330.rs
index 6ab46c7c8ef..21637cb9a8a 100644
--- a/gcc/testsuite/rust/compile/issue-2330.rs
+++ b/gcc/testsuite/rust/compile/issue-2330.rs
@@ -1,5 +1,5 @@
 // { dg-options "-w" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/compile/issue-2369.rs b/gcc/testsuite/rust/compile/issue-2369.rs
index 9475aef9d71..e5a30307a6e 100644
--- a/gcc/testsuite/rust/compile/issue-2369.rs
+++ b/gcc/testsuite/rust/compile/issue-2369.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2375.rs b/gcc/testsuite/rust/compile/issue-2375.rs
index a61fef8b618..e3b9c9f1353 100644
--- a/gcc/testsuite/rust/compile/issue-2375.rs
+++ b/gcc/testsuite/rust/compile/issue-2375.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2478.rs b/gcc/testsuite/rust/compile/issue-2478.rs
index 7fe4e2d2a94..1cce4b2853d 100644
--- a/gcc/testsuite/rust/compile/issue-2478.rs
+++ b/gcc/testsuite/rust/compile/issue-2478.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2499.rs b/gcc/testsuite/rust/compile/issue-2499.rs
index 662d58fb5b1..f6d40d894fa 100644
--- a/gcc/testsuite/rust/compile/issue-2499.rs
+++ b/gcc/testsuite/rust/compile/issue-2499.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2723-1.rs b/gcc/testsuite/rust/compile/issue-2723-1.rs
index 261956de42e..5c773832cbd 100644
--- a/gcc/testsuite/rust/compile/issue-2723-1.rs
+++ b/gcc/testsuite/rust/compile/issue-2723-1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2723-2.rs b/gcc/testsuite/rust/compile/issue-2723-2.rs
index c7609d1e14d..4baf088dbd7 100644
--- a/gcc/testsuite/rust/compile/issue-2723-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2723-2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2725.rs b/gcc/testsuite/rust/compile/issue-2725.rs
index a344bc8d464..06b1a8900f1 100644
--- a/gcc/testsuite/rust/compile/issue-2725.rs
+++ b/gcc/testsuite/rust/compile/issue-2725.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 trait Trait: ?Sized {} // { dg-error ".?Trait. is not permitted in supertraits" }
diff --git a/gcc/testsuite/rust/compile/issue-2747.rs b/gcc/testsuite/rust/compile/issue-2747.rs
index a9c09e7372f..fe4b572d792 100644
--- a/gcc/testsuite/rust/compile/issue-2747.rs
+++ b/gcc/testsuite/rust/compile/issue-2747.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2772-1.rs b/gcc/testsuite/rust/compile/issue-2772-1.rs
index 69977db0bfb..aad85917393 100644
--- a/gcc/testsuite/rust/compile/issue-2772-1.rs
+++ b/gcc/testsuite/rust/compile/issue-2772-1.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2772-2.rs b/gcc/testsuite/rust/compile/issue-2772-2.rs
index b05f2b1dc2b..0e183246053 100644
--- a/gcc/testsuite/rust/compile/issue-2772-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2772-2.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2775.rs b/gcc/testsuite/rust/compile/issue-2775.rs
index 3ad7085785e..d67ced3e270 100644
--- a/gcc/testsuite/rust/compile/issue-2775.rs
+++ b/gcc/testsuite/rust/compile/issue-2775.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2782.rs b/gcc/testsuite/rust/compile/issue-2782.rs
index e199c882c86..61fc20c143a 100644
--- a/gcc/testsuite/rust/compile/issue-2782.rs
+++ b/gcc/testsuite/rust/compile/issue-2782.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2907.rs b/gcc/testsuite/rust/compile/issue-2907.rs
index fdf1953fc8c..8c0d49673e7 100644
--- a/gcc/testsuite/rust/compile/issue-2907.rs
+++ b/gcc/testsuite/rust/compile/issue-2907.rs
@@ -1,5 +1,6 @@
 #![feature(lang_items)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2951.rs b/gcc/testsuite/rust/compile/issue-2951.rs
index d30a3bf2adf..218332d81ea 100644
--- a/gcc/testsuite/rust/compile/issue-2951.rs
+++ b/gcc/testsuite/rust/compile/issue-2951.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2953-1.rs b/gcc/testsuite/rust/compile/issue-2953-1.rs
index d07059e440e..d3289b933c9 100644
--- a/gcc/testsuite/rust/compile/issue-2953-1.rs
+++ b/gcc/testsuite/rust/compile/issue-2953-1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 pub trait Sized {
     // Empty.
diff --git a/gcc/testsuite/rust/compile/issue-2953-2.rs b/gcc/testsuite/rust/compile/issue-2953-2.rs
index 59276246a1c..5fbd6c45ac5 100644
--- a/gcc/testsuite/rust/compile/issue-2953-2.rs
+++ b/gcc/testsuite/rust/compile/issue-2953-2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 pub trait Sized {
     // Empty.
diff --git a/gcc/testsuite/rust/compile/issue-2954.rs b/gcc/testsuite/rust/compile/issue-2954.rs
index 52f7c9140ec..973ee0a425d 100644
--- a/gcc/testsuite/rust/compile/issue-2954.rs
+++ b/gcc/testsuite/rust/compile/issue-2954.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-2987.rs b/gcc/testsuite/rust/compile/issue-2987.rs
index 1ab5fdc3647..9560bde3662 100644
--- a/gcc/testsuite/rust/compile/issue-2987.rs
+++ b/gcc/testsuite/rust/compile/issue-2987.rs
@@ -1,5 +1,6 @@
 // { dg-options "-w" } Currently there are a lot of warnings produced from inside clone/copy
 // builtins
+#![feature(lang_items)]
 
 #[lang = "copy"]
 trait Copy {}
diff --git a/gcc/testsuite/rust/compile/issue-3009.rs b/gcc/testsuite/rust/compile/issue-3009.rs
index 2eb4ef39abd..3d6fb9fd632 100644
--- a/gcc/testsuite/rust/compile/issue-3009.rs
+++ b/gcc/testsuite/rust/compile/issue-3009.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3022.rs b/gcc/testsuite/rust/compile/issue-3022.rs
index b8b8e6fd5c7..e9358c9aaee 100644
--- a/gcc/testsuite/rust/compile/issue-3022.rs
+++ b/gcc/testsuite/rust/compile/issue-3022.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3030.rs b/gcc/testsuite/rust/compile/issue-3030.rs
index 0a1866d9a6b..94222b78ac8 100644
--- a/gcc/testsuite/rust/compile/issue-3030.rs
+++ b/gcc/testsuite/rust/compile/issue-3030.rs
@@ -1,5 +1,6 @@
 #![feature(negative_impls)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3032-1.rs b/gcc/testsuite/rust/compile/issue-3032-1.rs
index e9eb02794ce..7338cb99b41 100644
--- a/gcc/testsuite/rust/compile/issue-3032-1.rs
+++ b/gcc/testsuite/rust/compile/issue-3032-1.rs
@@ -1,4 +1,4 @@
-#![feature(negative_impls)]
+#![feature(negative_impls, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/issue-3032-2.rs b/gcc/testsuite/rust/compile/issue-3032-2.rs
index 9e09d419072..37c081b8c91 100644
--- a/gcc/testsuite/rust/compile/issue-3032-2.rs
+++ b/gcc/testsuite/rust/compile/issue-3032-2.rs
@@ -1,4 +1,4 @@
-#![feature(negative_impls)]
+#![feature(negative_impls, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/issue-3033.rs b/gcc/testsuite/rust/compile/issue-3033.rs
index 9085b7616c0..7adce5bd122 100644
--- a/gcc/testsuite/rust/compile/issue-3033.rs
+++ b/gcc/testsuite/rust/compile/issue-3033.rs
@@ -1,4 +1,4 @@
-#![feature(negative_impls)]
+#![feature(negative_impls, lang_items)]
 
 #[lang = "copy"]
 trait Copy {}
diff --git a/gcc/testsuite/rust/compile/issue-3035.rs b/gcc/testsuite/rust/compile/issue-3035.rs
index 3266d841dea..80c2ab62f86 100644
--- a/gcc/testsuite/rust/compile/issue-3035.rs
+++ b/gcc/testsuite/rust/compile/issue-3035.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3036.rs b/gcc/testsuite/rust/compile/issue-3036.rs
index 4418ccc04cb..39856d57478 100644
--- a/gcc/testsuite/rust/compile/issue-3036.rs
+++ b/gcc/testsuite/rust/compile/issue-3036.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3045-1.rs b/gcc/testsuite/rust/compile/issue-3045-1.rs
index a1328f22d0c..1f62e368f42 100644
--- a/gcc/testsuite/rust/compile/issue-3045-1.rs
+++ b/gcc/testsuite/rust/compile/issue-3045-1.rs
@@ -1,4 +1,4 @@
-#![feature(dropck_eyepatch)]
+#![feature(dropck_eyepatch, lang_items)]
 #[allow(dead_code)]
 
 #[lang = "sized"]
diff --git a/gcc/testsuite/rust/compile/issue-3045-2.rs b/gcc/testsuite/rust/compile/issue-3045-2.rs
index 177707fb475..4c90d4d8c3e 100644
--- a/gcc/testsuite/rust/compile/issue-3045-2.rs
+++ b/gcc/testsuite/rust/compile/issue-3045-2.rs
@@ -1,4 +1,4 @@
-#![feature(dropck_eyepatch)]
+#![feature(dropck_eyepatch, lang_items)]
 #[allow(dead_code)]
 
 #[lang = "sized"]
diff --git a/gcc/testsuite/rust/compile/issue-3144.rs b/gcc/testsuite/rust/compile/issue-3144.rs
index 4e61078a0dc..02c6ff6e1d2 100644
--- a/gcc/testsuite/rust/compile/issue-3144.rs
+++ b/gcc/testsuite/rust/compile/issue-3144.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3242.rs b/gcc/testsuite/rust/compile/issue-3242.rs
index a4542aea00b..a6bd1c838c9 100644
--- a/gcc/testsuite/rust/compile/issue-3242.rs
+++ b/gcc/testsuite/rust/compile/issue-3242.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3304.rs b/gcc/testsuite/rust/compile/issue-3304.rs
index cc376faeb9d..aa857e229d7 100644
--- a/gcc/testsuite/rust/compile/issue-3304.rs
+++ b/gcc/testsuite/rust/compile/issue-3304.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3382.rs b/gcc/testsuite/rust/compile/issue-3382.rs
index 6f4382f1b52..c26494c632b 100644
--- a/gcc/testsuite/rust/compile/issue-3382.rs
+++ b/gcc/testsuite/rust/compile/issue-3382.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3402-1.rs b/gcc/testsuite/rust/compile/issue-3402-1.rs
index ed603cecaad..cd13b748cee 100644
--- a/gcc/testsuite/rust/compile/issue-3402-1.rs
+++ b/gcc/testsuite/rust/compile/issue-3402-1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 pub struct Foo {
     a: i32,
     // { dg-warning "field is never read" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/rust/compile/issue-3402-2.rs b/gcc/testsuite/rust/compile/issue-3402-2.rs
index b665af25b51..33d72e08f2e 100644
--- a/gcc/testsuite/rust/compile/issue-3402-2.rs
+++ b/gcc/testsuite/rust/compile/issue-3402-2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 pub struct Bar(i32);
 
 #[lang = "sized"]
diff --git a/gcc/testsuite/rust/compile/issue-3403.rs b/gcc/testsuite/rust/compile/issue-3403.rs
index ced6b4efd97..6a3f7200a7b 100644
--- a/gcc/testsuite/rust/compile/issue-3403.rs
+++ b/gcc/testsuite/rust/compile/issue-3403.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 pub struct Foo {
     a: i32,
     // { dg-warning "field is never read" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/rust/compile/issue-3454.rs b/gcc/testsuite/rust/compile/issue-3454.rs
index 2a3c0c71460..e2a5a39b454 100644
--- a/gcc/testsuite/rust/compile/issue-3454.rs
+++ b/gcc/testsuite/rust/compile/issue-3454.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3551.rs b/gcc/testsuite/rust/compile/issue-3551.rs
index 6d6a8129885..55303b21f7c 100644
--- a/gcc/testsuite/rust/compile/issue-3551.rs
+++ b/gcc/testsuite/rust/compile/issue-3551.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3554-2.rs b/gcc/testsuite/rust/compile/issue-3554-2.rs
index e455a8b2cec..3710e5778ab 100644
--- a/gcc/testsuite/rust/compile/issue-3554-2.rs
+++ b/gcc/testsuite/rust/compile/issue-3554-2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3599.rs b/gcc/testsuite/rust/compile/issue-3599.rs
index 1d29fac84e9..a41d2b3ae00 100644
--- a/gcc/testsuite/rust/compile/issue-3599.rs
+++ b/gcc/testsuite/rust/compile/issue-3599.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3642.rs b/gcc/testsuite/rust/compile/issue-3642.rs
index 6d9decc8616..30abfd3b251 100644
--- a/gcc/testsuite/rust/compile/issue-3642.rs
+++ b/gcc/testsuite/rust/compile/issue-3642.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3711.rs b/gcc/testsuite/rust/compile/issue-3711.rs
index a3f9c39b4c5..911d4adbc2c 100644
--- a/gcc/testsuite/rust/compile/issue-3711.rs
+++ b/gcc/testsuite/rust/compile/issue-3711.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3836.rs b/gcc/testsuite/rust/compile/issue-3836.rs
index a2287957ad1..8cc661febc7 100644
--- a/gcc/testsuite/rust/compile/issue-3836.rs
+++ b/gcc/testsuite/rust/compile/issue-3836.rs
@@ -1,4 +1,6 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
+
 mod core {
     mod option {
         pub enum Option<T> {
diff --git a/gcc/testsuite/rust/compile/issue-3898.rs b/gcc/testsuite/rust/compile/issue-3898.rs
index 114370cf881..8199267469a 100644
--- a/gcc/testsuite/rust/compile/issue-3898.rs
+++ b/gcc/testsuite/rust/compile/issue-3898.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-frust-compile-until=lowering" }
+#![feature(lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/issue-3915.rs b/gcc/testsuite/rust/compile/issue-3915.rs
index 7132036f92f..5cd8dc02229 100644
--- a/gcc/testsuite/rust/compile/issue-3915.rs
+++ b/gcc/testsuite/rust/compile/issue-3915.rs
@@ -1,4 +1,6 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-3916.rs b/gcc/testsuite/rust/compile/issue-3916.rs
index 59b522b4ed5..c4adb643c3f 100644
--- a/gcc/testsuite/rust/compile/issue-3916.rs
+++ b/gcc/testsuite/rust/compile/issue-3916.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/issue-3969.rs b/gcc/testsuite/rust/compile/issue-3969.rs
index 9608589c3e2..6715978c4f6 100644
--- a/gcc/testsuite/rust/compile/issue-3969.rs
+++ b/gcc/testsuite/rust/compile/issue-3969.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 pub trait Sized {
     // Empty.
diff --git a/gcc/testsuite/rust/compile/issue-402.rs b/gcc/testsuite/rust/compile/issue-402.rs
index 2c99fc8f248..ec398e9bc96 100644
--- a/gcc/testsuite/rust/compile/issue-402.rs
+++ b/gcc/testsuite/rust/compile/issue-402.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-4090-1.rs b/gcc/testsuite/rust/compile/issue-4090-1.rs
index 9f83835ee4a..04119432fba 100644
--- a/gcc/testsuite/rust/compile/issue-4090-1.rs
+++ b/gcc/testsuite/rust/compile/issue-4090-1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 mod core {
     mod marker {
         #[lang = "sized"]
diff --git a/gcc/testsuite/rust/compile/issue-4090-2.rs b/gcc/testsuite/rust/compile/issue-4090-2.rs
index 75d6b7c6407..7b76c0aa603 100644
--- a/gcc/testsuite/rust/compile/issue-4090-2.rs
+++ b/gcc/testsuite/rust/compile/issue-4090-2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 mod core {
     mod marker {
         #[lang = "sized"]
diff --git a/gcc/testsuite/rust/compile/issue-850.rs b/gcc/testsuite/rust/compile/issue-850.rs
index e42b5573d1d..c6a5f316f6a 100644
--- a/gcc/testsuite/rust/compile/issue-850.rs
+++ b/gcc/testsuite/rust/compile/issue-850.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/issue-855.rs b/gcc/testsuite/rust/compile/issue-855.rs
index 9e450ddda3a..3736d087b8e 100644
--- a/gcc/testsuite/rust/compile/issue-855.rs
+++ b/gcc/testsuite/rust/compile/issue-855.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 pub use result::Result::{self, Err, Ok};
 
 #[lang = "sized"]
diff --git a/gcc/testsuite/rust/compile/issue-925.rs b/gcc/testsuite/rust/compile/issue-925.rs
index 507fe9444e5..34c611b99b3 100644
--- a/gcc/testsuite/rust/compile/issue-925.rs
+++ b/gcc/testsuite/rust/compile/issue-925.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/iterators1.rs b/gcc/testsuite/rust/compile/iterators1.rs
index 2ea3d741c9f..4bbc47e2570 100644
--- a/gcc/testsuite/rust/compile/iterators1.rs
+++ b/gcc/testsuite/rust/compile/iterators1.rs
@@ -1,4 +1,4 @@
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/compile/macros/builtin/option_env1.rs b/gcc/testsuite/rust/compile/macros/builtin/option_env1.rs
index cf9f65b0ea4..b96c1ee255d 100644
--- a/gcc/testsuite/rust/compile/macros/builtin/option_env1.rs
+++ b/gcc/testsuite/rust/compile/macros/builtin/option_env1.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! option_env {
diff --git a/gcc/testsuite/rust/compile/macros/builtin/option_env2.rs b/gcc/testsuite/rust/compile/macros/builtin/option_env2.rs
index 63f72545fd9..ef0e563b947 100644
--- a/gcc/testsuite/rust/compile/macros/builtin/option_env2.rs
+++ b/gcc/testsuite/rust/compile/macros/builtin/option_env2.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! option_env {
diff --git a/gcc/testsuite/rust/compile/macros/builtin/option_env3.rs b/gcc/testsuite/rust/compile/macros/builtin/option_env3.rs
index ad6dd4c21da..545f3c8d566 100644
--- a/gcc/testsuite/rust/compile/macros/builtin/option_env3.rs
+++ b/gcc/testsuite/rust/compile/macros/builtin/option_env3.rs
@@ -1,4 +1,4 @@
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! option_env {
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro-issue1400.rs b/gcc/testsuite/rust/compile/macros/mbe/macro-issue1400.rs
index 5c51b78065c..0708128703a 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro-issue1400.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro-issue1400.rs
@@ -1,5 +1,6 @@
 // { dg-additional-options "-w" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro-issue3708.rs b/gcc/testsuite/rust/compile/macros/mbe/macro-issue3708.rs
index bcbc8dd695a..bbf02765581 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro-issue3708.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro-issue3708.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-frust-compile-until=lowering" }
+#![feature(lang_items)]
 
 macro_rules! impl_fn_for_zst {
     ($(
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro-issue3709-2.rs b/gcc/testsuite/rust/compile/macros/mbe/macro-issue3709-2.rs
index 47514f1e998..4d764973736 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro-issue3709-2.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro-issue3709-2.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-frust-compile-until=lowering" }
+#![feature(lang_items)]
 
 macro_rules! impl_fn_for_zst {
     ($(
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro20.rs b/gcc/testsuite/rust/compile/macros/mbe/macro20.rs
index e03455b1b01..448183414bd 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro20.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro20.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro23.rs b/gcc/testsuite/rust/compile/macros/mbe/macro23.rs
index a6a2afdad07..3add715deb5 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro23.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro23.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro40.rs b/gcc/testsuite/rust/compile/macros/mbe/macro40.rs
index f9d048e8ab1..39cbf5a737e 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro40.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro40.rs
@@ -1,5 +1,6 @@
 // { dg-additional-options "-w" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro49.rs b/gcc/testsuite/rust/compile/macros/mbe/macro49.rs
index 9d63ff1e627..850cf44d419 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro49.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro49.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/macros/mbe/macro54.rs b/gcc/testsuite/rust/compile/macros/mbe/macro54.rs
index d3b3f806a6a..1cc4b3d542c 100644
--- a/gcc/testsuite/rust/compile/macros/mbe/macro54.rs
+++ b/gcc/testsuite/rust/compile/macros/mbe/macro54.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/multiple_bindings1.rs b/gcc/testsuite/rust/compile/multiple_bindings1.rs
index 8a2e18c27b1..c433a0dd292 100644
--- a/gcc/testsuite/rust/compile/multiple_bindings1.rs
+++ b/gcc/testsuite/rust/compile/multiple_bindings1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/name_resolution2.rs b/gcc/testsuite/rust/compile/name_resolution2.rs
index 564c5d20ea5..997bf55ca67 100644
--- a/gcc/testsuite/rust/compile/name_resolution2.rs
+++ b/gcc/testsuite/rust/compile/name_resolution2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/name_resolution4.rs b/gcc/testsuite/rust/compile/name_resolution4.rs
index 0fc72f601c7..2da1aaeaa58 100644
--- a/gcc/testsuite/rust/compile/name_resolution4.rs
+++ b/gcc/testsuite/rust/compile/name_resolution4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/nested_generic.rs b/gcc/testsuite/rust/compile/nested_generic.rs
index 322b3c50afb..b7dae27bf5a 100644
--- a/gcc/testsuite/rust/compile/nested_generic.rs
+++ b/gcc/testsuite/rust/compile/nested_generic.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg.rs b/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg.rs
index ba1042a9bbe..9190c4004e6 100644
--- a/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg.rs
+++ b/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg2.rs b/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg2.rs
index a2662c25e21..c50823bc5c1 100644
--- a/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg2.rs
+++ b/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg3.rs b/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg3.rs
index b4342e8c4cb..fa65b55c13c 100644
--- a/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg3.rs
+++ b/gcc/testsuite/rust/compile/parse_associated_type_as_generic_arg3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/parse_closure_bind.rs b/gcc/testsuite/rust/compile/parse_closure_bind.rs
index 1e08197a5fd..45138466d61 100644
--- a/gcc/testsuite/rust/compile/parse_closure_bind.rs
+++ b/gcc/testsuite/rust/compile/parse_closure_bind.rs
@@ -1,5 +1,6 @@
 // { dg-additional-options "-frust-compile-until=typecheck" }
 // TODO: this should typecheck
+#![feature(lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/parse_complex_generic_application.rs b/gcc/testsuite/rust/compile/parse_complex_generic_application.rs
index 02877dd727e..b678cb219cd 100644
--- a/gcc/testsuite/rust/compile/parse_complex_generic_application.rs
+++ b/gcc/testsuite/rust/compile/parse_complex_generic_application.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/parse_complex_generic_application2.rs b/gcc/testsuite/rust/compile/parse_complex_generic_application2.rs
index 5ebc94f1f98..41ce21a4907 100644
--- a/gcc/testsuite/rust/compile/parse_complex_generic_application2.rs
+++ b/gcc/testsuite/rust/compile/parse_complex_generic_application2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/path_as_generic_arg.rs b/gcc/testsuite/rust/compile/path_as_generic_arg.rs
index 21baf8000e7..aff4ce2793d 100644
--- a/gcc/testsuite/rust/compile/path_as_generic_arg.rs
+++ b/gcc/testsuite/rust/compile/path_as_generic_arg.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/privacy4.rs b/gcc/testsuite/rust/compile/privacy4.rs
index 7865f6a3d47..5da43ffef75 100644
--- a/gcc/testsuite/rust/compile/privacy4.rs
+++ b/gcc/testsuite/rust/compile/privacy4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/privacy6.rs b/gcc/testsuite/rust/compile/privacy6.rs
index e1e0fac282b..72d1a3b4f33 100644
--- a/gcc/testsuite/rust/compile/privacy6.rs
+++ b/gcc/testsuite/rust/compile/privacy6.rs
@@ -1,5 +1,6 @@
 // { dg-additional-options "-w" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/silly-order-bug.rs b/gcc/testsuite/rust/compile/silly-order-bug.rs
index 0d9cf1d8a88..cdc8b2f8571 100644
--- a/gcc/testsuite/rust/compile/silly-order-bug.rs
+++ b/gcc/testsuite/rust/compile/silly-order-bug.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/sizeof-stray-infer-var-bug.rs b/gcc/testsuite/rust/compile/sizeof-stray-infer-var-bug.rs
index c46a97d1539..7377a26d735 100644
--- a/gcc/testsuite/rust/compile/sizeof-stray-infer-var-bug.rs
+++ b/gcc/testsuite/rust/compile/sizeof-stray-infer-var-bug.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/stmt_with_block_dot.rs b/gcc/testsuite/rust/compile/stmt_with_block_dot.rs
index c7037af8cd4..5a3721e5662 100644
--- a/gcc/testsuite/rust/compile/stmt_with_block_dot.rs
+++ b/gcc/testsuite/rust/compile/stmt_with_block_dot.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/structural-eq-peq.rs b/gcc/testsuite/rust/compile/structural-eq-peq.rs
index d04c295037f..9bdc98d3d46 100644
--- a/gcc/testsuite/rust/compile/structural-eq-peq.rs
+++ b/gcc/testsuite/rust/compile/structural-eq-peq.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "structural_peq"]
 pub trait StructuralPartialEq {
     // Empty.
diff --git a/gcc/testsuite/rust/compile/torture/associated_types1.rs b/gcc/testsuite/rust/compile/torture/associated_types1.rs
index 2be703722c2..4fc76af6ab9 100644
--- a/gcc/testsuite/rust/compile/torture/associated_types1.rs
+++ b/gcc/testsuite/rust/compile/torture/associated_types1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/forward_decl_5.rs b/gcc/testsuite/rust/compile/torture/forward_decl_5.rs
index 670ab0a799f..9d0660cc2f7 100644
--- a/gcc/testsuite/rust/compile/torture/forward_decl_5.rs
+++ b/gcc/testsuite/rust/compile/torture/forward_decl_5.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics1.rs b/gcc/testsuite/rust/compile/torture/generics1.rs
index b32eddd6c48..1d4c0f22384 100644
--- a/gcc/testsuite/rust/compile/torture/generics1.rs
+++ b/gcc/testsuite/rust/compile/torture/generics1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics10.rs b/gcc/testsuite/rust/compile/torture/generics10.rs
index 1a17e842a0d..af12d7d328d 100644
--- a/gcc/testsuite/rust/compile/torture/generics10.rs
+++ b/gcc/testsuite/rust/compile/torture/generics10.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics11.rs b/gcc/testsuite/rust/compile/torture/generics11.rs
index 9d5e719d774..0e2939f7d4f 100644
--- a/gcc/testsuite/rust/compile/torture/generics11.rs
+++ b/gcc/testsuite/rust/compile/torture/generics11.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics12.rs b/gcc/testsuite/rust/compile/torture/generics12.rs
index 9347b24d2d4..cf841dd1874 100644
--- a/gcc/testsuite/rust/compile/torture/generics12.rs
+++ b/gcc/testsuite/rust/compile/torture/generics12.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics13.rs b/gcc/testsuite/rust/compile/torture/generics13.rs
index 00b26ec0968..b83521f77fe 100644
--- a/gcc/testsuite/rust/compile/torture/generics13.rs
+++ b/gcc/testsuite/rust/compile/torture/generics13.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics14.rs b/gcc/testsuite/rust/compile/torture/generics14.rs
index 5be39ebff91..bf5b295546d 100644
--- a/gcc/testsuite/rust/compile/torture/generics14.rs
+++ b/gcc/testsuite/rust/compile/torture/generics14.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics15.rs b/gcc/testsuite/rust/compile/torture/generics15.rs
index 2b1f31c0217..ab65007b7a2 100644
--- a/gcc/testsuite/rust/compile/torture/generics15.rs
+++ b/gcc/testsuite/rust/compile/torture/generics15.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics16.rs b/gcc/testsuite/rust/compile/torture/generics16.rs
index a9fa2ebdf0b..0701c942afa 100644
--- a/gcc/testsuite/rust/compile/torture/generics16.rs
+++ b/gcc/testsuite/rust/compile/torture/generics16.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics17.rs b/gcc/testsuite/rust/compile/torture/generics17.rs
index 9a04158e4c9..a52de9b0077 100644
--- a/gcc/testsuite/rust/compile/torture/generics17.rs
+++ b/gcc/testsuite/rust/compile/torture/generics17.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics18.rs b/gcc/testsuite/rust/compile/torture/generics18.rs
index cb7b1fa7404..8a239f2ea33 100644
--- a/gcc/testsuite/rust/compile/torture/generics18.rs
+++ b/gcc/testsuite/rust/compile/torture/generics18.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics19.rs b/gcc/testsuite/rust/compile/torture/generics19.rs
index c98599fffda..4b372b61a48 100644
--- a/gcc/testsuite/rust/compile/torture/generics19.rs
+++ b/gcc/testsuite/rust/compile/torture/generics19.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics2.rs b/gcc/testsuite/rust/compile/torture/generics2.rs
index e720b422149..61fd57406a2 100644
--- a/gcc/testsuite/rust/compile/torture/generics2.rs
+++ b/gcc/testsuite/rust/compile/torture/generics2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics20.rs b/gcc/testsuite/rust/compile/torture/generics20.rs
index 92b022e3746..985189ed0e7 100644
--- a/gcc/testsuite/rust/compile/torture/generics20.rs
+++ b/gcc/testsuite/rust/compile/torture/generics20.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics21.rs b/gcc/testsuite/rust/compile/torture/generics21.rs
index 1c74ea42999..2986e69aedf 100644
--- a/gcc/testsuite/rust/compile/torture/generics21.rs
+++ b/gcc/testsuite/rust/compile/torture/generics21.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics22.rs b/gcc/testsuite/rust/compile/torture/generics22.rs
index b838e6e8262..b5c5f9a003e 100644
--- a/gcc/testsuite/rust/compile/torture/generics22.rs
+++ b/gcc/testsuite/rust/compile/torture/generics22.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics23.rs b/gcc/testsuite/rust/compile/torture/generics23.rs
index bf4dfb59f6b..d0da16f6719 100644
--- a/gcc/testsuite/rust/compile/torture/generics23.rs
+++ b/gcc/testsuite/rust/compile/torture/generics23.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics24.rs b/gcc/testsuite/rust/compile/torture/generics24.rs
index ce782c0e987..8655ca50988 100644
--- a/gcc/testsuite/rust/compile/torture/generics24.rs
+++ b/gcc/testsuite/rust/compile/torture/generics24.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics25.rs b/gcc/testsuite/rust/compile/torture/generics25.rs
index 4fe952a5da1..a711e2144bd 100644
--- a/gcc/testsuite/rust/compile/torture/generics25.rs
+++ b/gcc/testsuite/rust/compile/torture/generics25.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics26.rs b/gcc/testsuite/rust/compile/torture/generics26.rs
index 0111add4138..3a5dcac49e2 100644
--- a/gcc/testsuite/rust/compile/torture/generics26.rs
+++ b/gcc/testsuite/rust/compile/torture/generics26.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics27.rs b/gcc/testsuite/rust/compile/torture/generics27.rs
index c4ca4db81e0..db8fe765ac3 100644
--- a/gcc/testsuite/rust/compile/torture/generics27.rs
+++ b/gcc/testsuite/rust/compile/torture/generics27.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics28.rs b/gcc/testsuite/rust/compile/torture/generics28.rs
index c1ffd9c245f..f815ef5d2a6 100644
--- a/gcc/testsuite/rust/compile/torture/generics28.rs
+++ b/gcc/testsuite/rust/compile/torture/generics28.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics29.rs b/gcc/testsuite/rust/compile/torture/generics29.rs
index baf53e4347f..4a35b3b4113 100644
--- a/gcc/testsuite/rust/compile/torture/generics29.rs
+++ b/gcc/testsuite/rust/compile/torture/generics29.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics3.rs b/gcc/testsuite/rust/compile/torture/generics3.rs
index 4c5dabcbd8b..ae12d007dca 100644
--- a/gcc/testsuite/rust/compile/torture/generics3.rs
+++ b/gcc/testsuite/rust/compile/torture/generics3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics30.rs b/gcc/testsuite/rust/compile/torture/generics30.rs
index a84f140e1fd..f592e774c69 100644
--- a/gcc/testsuite/rust/compile/torture/generics30.rs
+++ b/gcc/testsuite/rust/compile/torture/generics30.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics31.rs b/gcc/testsuite/rust/compile/torture/generics31.rs
index f8e2f36ef73..a393a4c3bb6 100644
--- a/gcc/testsuite/rust/compile/torture/generics31.rs
+++ b/gcc/testsuite/rust/compile/torture/generics31.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics32.rs b/gcc/testsuite/rust/compile/torture/generics32.rs
index 49c4539d91d..f332a776595 100644
--- a/gcc/testsuite/rust/compile/torture/generics32.rs
+++ b/gcc/testsuite/rust/compile/torture/generics32.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics4.rs b/gcc/testsuite/rust/compile/torture/generics4.rs
index 54bdf56b63f..3d4875b9f64 100644
--- a/gcc/testsuite/rust/compile/torture/generics4.rs
+++ b/gcc/testsuite/rust/compile/torture/generics4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics5.rs b/gcc/testsuite/rust/compile/torture/generics5.rs
index df27fdd8f6e..3fcf13be08b 100644
--- a/gcc/testsuite/rust/compile/torture/generics5.rs
+++ b/gcc/testsuite/rust/compile/torture/generics5.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics6.rs b/gcc/testsuite/rust/compile/torture/generics6.rs
index 16b85fbcb18..79d1ab8c361 100644
--- a/gcc/testsuite/rust/compile/torture/generics6.rs
+++ b/gcc/testsuite/rust/compile/torture/generics6.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics7.rs b/gcc/testsuite/rust/compile/torture/generics7.rs
index 66454d6166d..0eb1db18c9c 100644
--- a/gcc/testsuite/rust/compile/torture/generics7.rs
+++ b/gcc/testsuite/rust/compile/torture/generics7.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics8.rs b/gcc/testsuite/rust/compile/torture/generics8.rs
index bc6d09b9919..b46b1a28886 100644
--- a/gcc/testsuite/rust/compile/torture/generics8.rs
+++ b/gcc/testsuite/rust/compile/torture/generics8.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/generics9.rs b/gcc/testsuite/rust/compile/torture/generics9.rs
index 3d9d748ef98..fa926eed92b 100644
--- a/gcc/testsuite/rust/compile/torture/generics9.rs
+++ b/gcc/testsuite/rust/compile/torture/generics9.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/intrinsics-2.rs b/gcc/testsuite/rust/compile/torture/intrinsics-2.rs
index a6cd8f8553f..23151b14de5 100644
--- a/gcc/testsuite/rust/compile/torture/intrinsics-2.rs
+++ b/gcc/testsuite/rust/compile/torture/intrinsics-2.rs
@@ -2,6 +2,7 @@
 
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/intrinsics-4.rs b/gcc/testsuite/rust/compile/torture/intrinsics-4.rs
index 3d26e999b9e..51fc3c1a76c 100644
--- a/gcc/testsuite/rust/compile/torture/intrinsics-4.rs
+++ b/gcc/testsuite/rust/compile/torture/intrinsics-4.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/intrinsics-5.rs b/gcc/testsuite/rust/compile/torture/intrinsics-5.rs
index 7a62cca280c..a015c2a1784 100644
--- a/gcc/testsuite/rust/compile/torture/intrinsics-5.rs
+++ b/gcc/testsuite/rust/compile/torture/intrinsics-5.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/intrinsics-6.rs b/gcc/testsuite/rust/compile/torture/intrinsics-6.rs
index 0e263459237..12821a06e4e 100644
--- a/gcc/testsuite/rust/compile/torture/intrinsics-6.rs
+++ b/gcc/testsuite/rust/compile/torture/intrinsics-6.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/intrinsics-7.rs b/gcc/testsuite/rust/compile/torture/intrinsics-7.rs
index 754aacb3449..6dc9187c483 100644
--- a/gcc/testsuite/rust/compile/torture/intrinsics-7.rs
+++ b/gcc/testsuite/rust/compile/torture/intrinsics-7.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/intrinsics-8.rs b/gcc/testsuite/rust/compile/torture/intrinsics-8.rs
index b9bd83c7624..22b101257cb 100644
--- a/gcc/testsuite/rust/compile/torture/intrinsics-8.rs
+++ b/gcc/testsuite/rust/compile/torture/intrinsics-8.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-1024.rs b/gcc/testsuite/rust/compile/torture/issue-1024.rs
index 819e329058c..c7325651e69 100644
--- a/gcc/testsuite/rust/compile/torture/issue-1024.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-1024.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-1075.rs b/gcc/testsuite/rust/compile/torture/issue-1075.rs
index d23774b2c0b..558467862b5 100644
--- a/gcc/testsuite/rust/compile/torture/issue-1075.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-1075.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-1432.rs b/gcc/testsuite/rust/compile/torture/issue-1432.rs
index 5b526fdd52d..df1b52738ce 100644
--- a/gcc/testsuite/rust/compile/torture/issue-1432.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-1432.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-1555.rs b/gcc/testsuite/rust/compile/torture/issue-1555.rs
index bee8952f368..b2f675a7948 100644
--- a/gcc/testsuite/rust/compile/torture/issue-1555.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-1555.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-368.rs b/gcc/testsuite/rust/compile/torture/issue-368.rs
index 775e70d9d23..a657a7c52bc 100644
--- a/gcc/testsuite/rust/compile/torture/issue-368.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-368.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-808.rs b/gcc/testsuite/rust/compile/torture/issue-808.rs
index 4186d54f4bc..f739d22e1c3 100644
--- a/gcc/testsuite/rust/compile/torture/issue-808.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-808.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-862.rs b/gcc/testsuite/rust/compile/torture/issue-862.rs
index d9ac9124601..88d6d652070 100644
--- a/gcc/testsuite/rust/compile/torture/issue-862.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-862.rs
@@ -1,5 +1,6 @@
 // { dg-additional-options "-w" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-893-2.rs b/gcc/testsuite/rust/compile/torture/issue-893-2.rs
index 3df27b8335e..2e4ec14b619 100644
--- a/gcc/testsuite/rust/compile/torture/issue-893-2.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-893-2.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/issue-893.rs b/gcc/testsuite/rust/compile/torture/issue-893.rs
index f96b5c34643..bd77c8dc41b 100644
--- a/gcc/testsuite/rust/compile/torture/issue-893.rs
+++ b/gcc/testsuite/rust/compile/torture/issue-893.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/must_use2.rs b/gcc/testsuite/rust/compile/torture/must_use2.rs
index cf6643eec25..9c9a1a7b3f1 100644
--- a/gcc/testsuite/rust/compile/torture/must_use2.rs
+++ b/gcc/testsuite/rust/compile/torture/must_use2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/nested_fn2.rs b/gcc/testsuite/rust/compile/torture/nested_fn2.rs
index ad7a10b0a82..57cee8a4a8a 100644
--- a/gcc/testsuite/rust/compile/torture/nested_fn2.rs
+++ b/gcc/testsuite/rust/compile/torture/nested_fn2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/phantom_data.rs b/gcc/testsuite/rust/compile/torture/phantom_data.rs
index d6c5adcf89a..a5b70a55f04 100644
--- a/gcc/testsuite/rust/compile/torture/phantom_data.rs
+++ b/gcc/testsuite/rust/compile/torture/phantom_data.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/range-lang-item1.rs b/gcc/testsuite/rust/compile/torture/range-lang-item1.rs
index 604fee8e328..db10f85265e 100644
--- a/gcc/testsuite/rust/compile/torture/range-lang-item1.rs
+++ b/gcc/testsuite/rust/compile/torture/range-lang-item1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits1.rs b/gcc/testsuite/rust/compile/torture/traits1.rs
index 8929501de6f..6fe943c8948 100644
--- a/gcc/testsuite/rust/compile/torture/traits1.rs
+++ b/gcc/testsuite/rust/compile/torture/traits1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits10.rs b/gcc/testsuite/rust/compile/torture/traits10.rs
index 4cf36e3c6f1..47104453b46 100644
--- a/gcc/testsuite/rust/compile/torture/traits10.rs
+++ b/gcc/testsuite/rust/compile/torture/traits10.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits11.rs b/gcc/testsuite/rust/compile/torture/traits11.rs
index 02383a5610a..1cab51faf72 100644
--- a/gcc/testsuite/rust/compile/torture/traits11.rs
+++ b/gcc/testsuite/rust/compile/torture/traits11.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits12.rs b/gcc/testsuite/rust/compile/torture/traits12.rs
index 8648022b8fe..3e340eb273f 100644
--- a/gcc/testsuite/rust/compile/torture/traits12.rs
+++ b/gcc/testsuite/rust/compile/torture/traits12.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits13.rs b/gcc/testsuite/rust/compile/torture/traits13.rs
index 5d9c81943d9..ce70a28d344 100644
--- a/gcc/testsuite/rust/compile/torture/traits13.rs
+++ b/gcc/testsuite/rust/compile/torture/traits13.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits14.rs b/gcc/testsuite/rust/compile/torture/traits14.rs
index ab546a88fae..2996ecf1ab1 100644
--- a/gcc/testsuite/rust/compile/torture/traits14.rs
+++ b/gcc/testsuite/rust/compile/torture/traits14.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits15.rs b/gcc/testsuite/rust/compile/torture/traits15.rs
index c1863a8a2f9..c875577ef6f 100644
--- a/gcc/testsuite/rust/compile/torture/traits15.rs
+++ b/gcc/testsuite/rust/compile/torture/traits15.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits16.rs b/gcc/testsuite/rust/compile/torture/traits16.rs
index 8c8e682e6c1..7dc546c4c99 100644
--- a/gcc/testsuite/rust/compile/torture/traits16.rs
+++ b/gcc/testsuite/rust/compile/torture/traits16.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits17.rs b/gcc/testsuite/rust/compile/torture/traits17.rs
index 268c2bd50c5..9ee267eb9e2 100644
--- a/gcc/testsuite/rust/compile/torture/traits17.rs
+++ b/gcc/testsuite/rust/compile/torture/traits17.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits18.rs b/gcc/testsuite/rust/compile/torture/traits18.rs
index 512152e9fdf..bd32f70db0c 100644
--- a/gcc/testsuite/rust/compile/torture/traits18.rs
+++ b/gcc/testsuite/rust/compile/torture/traits18.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits19.rs b/gcc/testsuite/rust/compile/torture/traits19.rs
index 4be898d4024..bd1a6e28bcf 100644
--- a/gcc/testsuite/rust/compile/torture/traits19.rs
+++ b/gcc/testsuite/rust/compile/torture/traits19.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits2.rs b/gcc/testsuite/rust/compile/torture/traits2.rs
index a9dca948d1b..f0a33d9e2c3 100644
--- a/gcc/testsuite/rust/compile/torture/traits2.rs
+++ b/gcc/testsuite/rust/compile/torture/traits2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits3.rs b/gcc/testsuite/rust/compile/torture/traits3.rs
index dad6ddab05a..d06a68faf88 100644
--- a/gcc/testsuite/rust/compile/torture/traits3.rs
+++ b/gcc/testsuite/rust/compile/torture/traits3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits4.rs b/gcc/testsuite/rust/compile/torture/traits4.rs
index 49c4db2d34a..716d657e14a 100644
--- a/gcc/testsuite/rust/compile/torture/traits4.rs
+++ b/gcc/testsuite/rust/compile/torture/traits4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits5.rs b/gcc/testsuite/rust/compile/torture/traits5.rs
index c60a2597418..86e83e5d7de 100644
--- a/gcc/testsuite/rust/compile/torture/traits5.rs
+++ b/gcc/testsuite/rust/compile/torture/traits5.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits6.rs b/gcc/testsuite/rust/compile/torture/traits6.rs
index f11735324f2..f1c4e84de2d 100644
--- a/gcc/testsuite/rust/compile/torture/traits6.rs
+++ b/gcc/testsuite/rust/compile/torture/traits6.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits7.rs b/gcc/testsuite/rust/compile/torture/traits7.rs
index 545fd39416a..928dd627d1e 100644
--- a/gcc/testsuite/rust/compile/torture/traits7.rs
+++ b/gcc/testsuite/rust/compile/torture/traits7.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits8.rs b/gcc/testsuite/rust/compile/torture/traits8.rs
index cc0875bd075..f2515e891fb 100644
--- a/gcc/testsuite/rust/compile/torture/traits8.rs
+++ b/gcc/testsuite/rust/compile/torture/traits8.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/traits9.rs b/gcc/testsuite/rust/compile/torture/traits9.rs
index 3a7c37fcbb6..8015a35c322 100644
--- a/gcc/testsuite/rust/compile/torture/traits9.rs
+++ b/gcc/testsuite/rust/compile/torture/traits9.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/transmute-size-check-1.rs b/gcc/testsuite/rust/compile/torture/transmute-size-check-1.rs
index 7b987797d49..4de1843a9e1 100644
--- a/gcc/testsuite/rust/compile/torture/transmute-size-check-1.rs
+++ b/gcc/testsuite/rust/compile/torture/transmute-size-check-1.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/transmute1.rs b/gcc/testsuite/rust/compile/torture/transmute1.rs
index be9fb1de56d..fc1d94a3bb0 100644
--- a/gcc/testsuite/rust/compile/torture/transmute1.rs
+++ b/gcc/testsuite/rust/compile/torture/transmute1.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/uninit-intrinsic-1.rs b/gcc/testsuite/rust/compile/torture/uninit-intrinsic-1.rs
index af1cb541fc3..50083e596ac 100644
--- a/gcc/testsuite/rust/compile/torture/uninit-intrinsic-1.rs
+++ b/gcc/testsuite/rust/compile/torture/uninit-intrinsic-1.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/torture/utf8_identifiers.rs b/gcc/testsuite/rust/compile/torture/utf8_identifiers.rs
index 696fcc0a3d8..f7d6b3771a7 100644
--- a/gcc/testsuite/rust/compile/torture/utf8_identifiers.rs
+++ b/gcc/testsuite/rust/compile/torture/utf8_identifiers.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits1.rs b/gcc/testsuite/rust/compile/traits1.rs
index 779662c3f41..d67a6cd1373 100644
--- a/gcc/testsuite/rust/compile/traits1.rs
+++ b/gcc/testsuite/rust/compile/traits1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits10.rs b/gcc/testsuite/rust/compile/traits10.rs
index da6c1555304..5e6e7e2cbef 100644
--- a/gcc/testsuite/rust/compile/traits10.rs
+++ b/gcc/testsuite/rust/compile/traits10.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits11.rs b/gcc/testsuite/rust/compile/traits11.rs
index ac8ccdf5886..6aa860b7412 100644
--- a/gcc/testsuite/rust/compile/traits11.rs
+++ b/gcc/testsuite/rust/compile/traits11.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits12.rs b/gcc/testsuite/rust/compile/traits12.rs
index b194e073a91..99f10a2206d 100644
--- a/gcc/testsuite/rust/compile/traits12.rs
+++ b/gcc/testsuite/rust/compile/traits12.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits2.rs b/gcc/testsuite/rust/compile/traits2.rs
index a76f4c02ffc..857ab28688c 100644
--- a/gcc/testsuite/rust/compile/traits2.rs
+++ b/gcc/testsuite/rust/compile/traits2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits3.rs b/gcc/testsuite/rust/compile/traits3.rs
index 119132f80e8..c4e3185f59c 100644
--- a/gcc/testsuite/rust/compile/traits3.rs
+++ b/gcc/testsuite/rust/compile/traits3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits4.rs b/gcc/testsuite/rust/compile/traits4.rs
index 4388b5e1cb5..11a0c78c167 100644
--- a/gcc/testsuite/rust/compile/traits4.rs
+++ b/gcc/testsuite/rust/compile/traits4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits5.rs b/gcc/testsuite/rust/compile/traits5.rs
index 4e9dcc167b7..5bb6793b93b 100644
--- a/gcc/testsuite/rust/compile/traits5.rs
+++ b/gcc/testsuite/rust/compile/traits5.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits6.rs b/gcc/testsuite/rust/compile/traits6.rs
index d081dd11e10..b4922ccad03 100644
--- a/gcc/testsuite/rust/compile/traits6.rs
+++ b/gcc/testsuite/rust/compile/traits6.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits7.rs b/gcc/testsuite/rust/compile/traits7.rs
index 68f3f38f97b..62e197e7d0e 100644
--- a/gcc/testsuite/rust/compile/traits7.rs
+++ b/gcc/testsuite/rust/compile/traits7.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits8.rs b/gcc/testsuite/rust/compile/traits8.rs
index ccba9fad5db..117ba542c1f 100644
--- a/gcc/testsuite/rust/compile/traits8.rs
+++ b/gcc/testsuite/rust/compile/traits8.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/traits9.rs b/gcc/testsuite/rust/compile/traits9.rs
index f4308e8ccc1..33412443623 100644
--- a/gcc/testsuite/rust/compile/traits9.rs
+++ b/gcc/testsuite/rust/compile/traits9.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/try-expr1.rs b/gcc/testsuite/rust/compile/try-expr1.rs
index f1a78657e85..f6e460e4311 100644
--- a/gcc/testsuite/rust/compile/try-expr1.rs
+++ b/gcc/testsuite/rust/compile/try-expr1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-frust-compile-until=typecheck" }
+#![feature(lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/try-trait.rs b/gcc/testsuite/rust/compile/try-trait.rs
index 9ec135dcd56..3c0a88c05e8 100644
--- a/gcc/testsuite/rust/compile/try-trait.rs
+++ b/gcc/testsuite/rust/compile/try-trait.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/try_block1.rs b/gcc/testsuite/rust/compile/try_block1.rs
index 7ae053683e9..9ace0296ecf 100644
--- a/gcc/testsuite/rust/compile/try_block1.rs
+++ b/gcc/testsuite/rust/compile/try_block1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-frust-edition=2018" }
+#![feature(lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/compile/type-bindings1.rs b/gcc/testsuite/rust/compile/type-bindings1.rs
index ef0b47128df..fabb4871187 100644
--- a/gcc/testsuite/rust/compile/type-bindings1.rs
+++ b/gcc/testsuite/rust/compile/type-bindings1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/unconstrained_type_param.rs b/gcc/testsuite/rust/compile/unconstrained_type_param.rs
index 60554dac0e0..dccfc9ed919 100644
--- a/gcc/testsuite/rust/compile/unconstrained_type_param.rs
+++ b/gcc/testsuite/rust/compile/unconstrained_type_param.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/unify-errors1.rs b/gcc/testsuite/rust/compile/unify-errors1.rs
index 0fe95efd0d7..e10105950aa 100644
--- a/gcc/testsuite/rust/compile/unify-errors1.rs
+++ b/gcc/testsuite/rust/compile/unify-errors1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/unsafe10.rs b/gcc/testsuite/rust/compile/unsafe10.rs
index 5861c15cd71..12c0483ce90 100644
--- a/gcc/testsuite/rust/compile/unsafe10.rs
+++ b/gcc/testsuite/rust/compile/unsafe10.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/v0-mangle1.rs b/gcc/testsuite/rust/compile/v0-mangle1.rs
index 04c546e351a..b4a8c131382 100644
--- a/gcc/testsuite/rust/compile/v0-mangle1.rs
+++ b/gcc/testsuite/rust/compile/v0-mangle1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options -frust-mangling=v0 }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/v0-mangle2.rs b/gcc/testsuite/rust/compile/v0-mangle2.rs
index d092dcc7a19..4378dd874f7 100644
--- a/gcc/testsuite/rust/compile/v0-mangle2.rs
+++ b/gcc/testsuite/rust/compile/v0-mangle2.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options -frust-mangling=v0 }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/compile/while_let1.rs b/gcc/testsuite/rust/compile/while_let1.rs
index a3fa3053226..03d84df98c9 100644
--- a/gcc/testsuite/rust/compile/while_let1.rs
+++ b/gcc/testsuite/rust/compile/while_let1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 // use self::Ordering::*;
 // use Ordering::*;
 
diff --git a/gcc/testsuite/rust/execute/black_box.rs b/gcc/testsuite/rust/execute/black_box.rs
index 58d10a3e420..8fa2ccefeb4 100644
--- a/gcc/testsuite/rust/execute/black_box.rs
+++ b/gcc/testsuite/rust/execute/black_box.rs
@@ -1,5 +1,5 @@
 /* { dg-output "Value is: 42\r*\n" } */
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 extern "C" {
     fn printf(s: *const i8, ...);
diff --git a/gcc/testsuite/rust/execute/torture/atomic_load.rs b/gcc/testsuite/rust/execute/torture/atomic_load.rs
index 11da8484494..c2727007d10 100644
--- a/gcc/testsuite/rust/execute/torture/atomic_load.rs
+++ b/gcc/testsuite/rust/execute/torture/atomic_load.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/atomic_store.rs b/gcc/testsuite/rust/execute/torture/atomic_store.rs
index 1b46678ba38..acf7c64c7f6 100644
--- a/gcc/testsuite/rust/execute/torture/atomic_store.rs
+++ b/gcc/testsuite/rust/execute/torture/atomic_store.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/basic_partial_ord1.rs b/gcc/testsuite/rust/execute/torture/basic_partial_ord1.rs
index 0431629e9ea..d51c95dc699 100644
--- a/gcc/testsuite/rust/execute/torture/basic_partial_ord1.rs
+++ b/gcc/testsuite/rust/execute/torture/basic_partial_ord1.rs
@@ -1,4 +1,6 @@
 /* { dg-output "less\r*" }*/
+#![feature(lang_items)]
+
 mod core {
     mod option {
         pub enum Option<T> {
diff --git a/gcc/testsuite/rust/execute/torture/basic_partial_ord2.rs b/gcc/testsuite/rust/execute/torture/basic_partial_ord2.rs
index b6a96953d4a..86c26df82e4 100644
--- a/gcc/testsuite/rust/execute/torture/basic_partial_ord2.rs
+++ b/gcc/testsuite/rust/execute/torture/basic_partial_ord2.rs
@@ -1,5 +1,7 @@
 /* { dg-output "<><=>=\r*" } */
 /* { dg-options "-w" } */
+#![feature(lang_items)]
+
 mod core {
     mod option {
         pub enum Option<T> {
diff --git a/gcc/testsuite/rust/execute/torture/builtin_macro_option_env.rs b/gcc/testsuite/rust/execute/torture/builtin_macro_option_env.rs
index 56fbeaab602..708c2aa1401 100644
--- a/gcc/testsuite/rust/execute/torture/builtin_macro_option_env.rs
+++ b/gcc/testsuite/rust/execute/torture/builtin_macro_option_env.rs
@@ -1,7 +1,7 @@
 // { dg-output "VALUE\r*\nVALUE\r*\n" }
 // { dg-set-compiler-env-var ENV_MACRO_TEST "VALUE" }
 
-#![feature(rustc_attrs)]
+#![feature(rustc_attrs, lang_items)]
 
 #[rustc_builtin_macro]
 macro_rules! option_env {
diff --git a/gcc/testsuite/rust/execute/torture/closure1.rs b/gcc/testsuite/rust/execute/torture/closure1.rs
index e9564133b55..1a5e498246b 100644
--- a/gcc/testsuite/rust/execute/torture/closure1.rs
+++ b/gcc/testsuite/rust/execute/torture/closure1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/closure2.rs b/gcc/testsuite/rust/execute/torture/closure2.rs
index deca7845f8b..06f385fac3c 100644
--- a/gcc/testsuite/rust/execute/torture/closure2.rs
+++ b/gcc/testsuite/rust/execute/torture/closure2.rs
@@ -1,4 +1,6 @@
 // { dg-output "3\r*\n" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/closure3.rs b/gcc/testsuite/rust/execute/torture/closure3.rs
index 98ec26143a3..e9c62449721 100644
--- a/gcc/testsuite/rust/execute/torture/closure3.rs
+++ b/gcc/testsuite/rust/execute/torture/closure3.rs
@@ -1,4 +1,6 @@
 // { dg-output "3\r*\n" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/closure4.rs b/gcc/testsuite/rust/execute/torture/closure4.rs
index 07017760789..3f845dcd564 100644
--- a/gcc/testsuite/rust/execute/torture/closure4.rs
+++ b/gcc/testsuite/rust/execute/torture/closure4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/coercion1.rs b/gcc/testsuite/rust/execute/torture/coercion1.rs
index 335f4962104..e6511b9635b 100644
--- a/gcc/testsuite/rust/execute/torture/coercion1.rs
+++ b/gcc/testsuite/rust/execute/torture/coercion1.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/coercion2.rs b/gcc/testsuite/rust/execute/torture/coercion2.rs
index 6be86020bdd..cf316e40732 100644
--- a/gcc/testsuite/rust/execute/torture/coercion2.rs
+++ b/gcc/testsuite/rust/execute/torture/coercion2.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/coercion3.rs b/gcc/testsuite/rust/execute/torture/coercion3.rs
index 0686056de4e..a870beae00b 100644
--- a/gcc/testsuite/rust/execute/torture/coercion3.rs
+++ b/gcc/testsuite/rust/execute/torture/coercion3.rs
@@ -1,4 +1,5 @@
 // { dg-output "123\r*\n" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-1.rs b/gcc/testsuite/rust/execute/torture/const-generics-1.rs
index dbb7afe6835..3ad1b3b6916 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-1.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-2.rs b/gcc/testsuite/rust/execute/torture/const-generics-2.rs
index cf92953a37a..6ed5535876b 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-2.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-3.rs b/gcc/testsuite/rust/execute/torture/const-generics-3.rs
index 53698bb2dd6..289b8654e99 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-3.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-4.rs b/gcc/testsuite/rust/execute/torture/const-generics-4.rs
index bf64f13e654..9104f24d574 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-4.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-5.rs b/gcc/testsuite/rust/execute/torture/const-generics-5.rs
index fd3c6a2ce15..91006edf2ff 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-5.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-5.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-6.rs b/gcc/testsuite/rust/execute/torture/const-generics-6.rs
index 325b58e387d..0aa7fae1831 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-6.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-6.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/const-generics-7.rs b/gcc/testsuite/rust/execute/torture/const-generics-7.rs
index afba0329a70..c75d89747ec 100644
--- a/gcc/testsuite/rust/execute/torture/const-generics-7.rs
+++ b/gcc/testsuite/rust/execute/torture/const-generics-7.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/copy_nonoverlapping1.rs b/gcc/testsuite/rust/execute/torture/copy_nonoverlapping1.rs
index 15bb811773b..662f8136554 100644
--- a/gcc/testsuite/rust/execute/torture/copy_nonoverlapping1.rs
+++ b/gcc/testsuite/rust/execute/torture/copy_nonoverlapping1.rs
@@ -1,4 +1,5 @@
 #![feature(intrinsics)]
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/derive-default1.rs b/gcc/testsuite/rust/execute/torture/derive-default1.rs
index 4bcafa0fc44..775f5be6e9b 100644
--- a/gcc/testsuite/rust/execute/torture/derive-default1.rs
+++ b/gcc/testsuite/rust/execute/torture/derive-default1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[derive(Default)]
 struct Foo { a: i32  }
 #[derive(Default)]
diff --git a/gcc/testsuite/rust/execute/torture/derive-partialeq1.rs b/gcc/testsuite/rust/execute/torture/derive-partialeq1.rs
index 67b2773e498..442ee672570 100644
--- a/gcc/testsuite/rust/execute/torture/derive-partialeq1.rs
+++ b/gcc/testsuite/rust/execute/torture/derive-partialeq1.rs
@@ -1,6 +1,6 @@
 // { dg-output "true\r*\nfalse\r*\nfalse\r*\n" }
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/execute/torture/derive-partialeq2.rs b/gcc/testsuite/rust/execute/torture/derive-partialeq2.rs
index e316017753a..1f4c374d4e8 100644
--- a/gcc/testsuite/rust/execute/torture/derive-partialeq2.rs
+++ b/gcc/testsuite/rust/execute/torture/derive-partialeq2.rs
@@ -1,6 +1,6 @@
 // { dg-output "true\r*\nfalse\r*\nfalse\r*\nfalse\r*\nfalse\r*\n" }
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub mod core {
     pub mod intrinsics {
diff --git a/gcc/testsuite/rust/execute/torture/derive_clone_enum1.rs b/gcc/testsuite/rust/execute/torture/derive_clone_enum1.rs
index 542ecd83db0..28a120fd4d0 100644
--- a/gcc/testsuite/rust/execute/torture/derive_clone_enum1.rs
+++ b/gcc/testsuite/rust/execute/torture/derive_clone_enum1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "clone"]
 trait Clone {
     pub fn clone(&self) -> Self;
diff --git a/gcc/testsuite/rust/execute/torture/derive_macro1.rs b/gcc/testsuite/rust/execute/torture/derive_macro1.rs
index 22cfaaae191..780a30f597a 100644
--- a/gcc/testsuite/rust/execute/torture/derive_macro1.rs
+++ b/gcc/testsuite/rust/execute/torture/derive_macro1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/derive_macro3.rs b/gcc/testsuite/rust/execute/torture/derive_macro3.rs
index 4138a5bf7e4..e8fe94cfedd 100644
--- a/gcc/testsuite/rust/execute/torture/derive_macro3.rs
+++ b/gcc/testsuite/rust/execute/torture/derive_macro3.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/derive_macro4.rs b/gcc/testsuite/rust/execute/torture/derive_macro4.rs
index 38c4808574a..adeeb8db42c 100644
--- a/gcc/testsuite/rust/execute/torture/derive_macro4.rs
+++ b/gcc/testsuite/rust/execute/torture/derive_macro4.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/enum_intrinsics1.rs b/gcc/testsuite/rust/execute/torture/enum_intrinsics1.rs
index c30bbd3d385..66011b555fb 100644
--- a/gcc/testsuite/rust/execute/torture/enum_intrinsics1.rs
+++ b/gcc/testsuite/rust/execute/torture/enum_intrinsics1.rs
@@ -1,6 +1,7 @@
 /* { dg-output "0\r*\n2\r*\n" } */
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/enum_intrinsics2.rs b/gcc/testsuite/rust/execute/torture/enum_intrinsics2.rs
index c1bae35deb2..5f7d5ffeaea 100644
--- a/gcc/testsuite/rust/execute/torture/enum_intrinsics2.rs
+++ b/gcc/testsuite/rust/execute/torture/enum_intrinsics2.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/for-loop1.rs b/gcc/testsuite/rust/execute/torture/for-loop1.rs
index 334218927b1..e48a4b12400 100644
--- a/gcc/testsuite/rust/execute/torture/for-loop1.rs
+++ b/gcc/testsuite/rust/execute/torture/for-loop1.rs
@@ -1,5 +1,5 @@
 // { dg-output "loop\r*\nloop\r*\n" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/execute/torture/for-loop2.rs b/gcc/testsuite/rust/execute/torture/for-loop2.rs
index 4f5dfe1a0a2..022e9510378 100644
--- a/gcc/testsuite/rust/execute/torture/for-loop2.rs
+++ b/gcc/testsuite/rust/execute/torture/for-loop2.rs
@@ -1,5 +1,5 @@
 // { dg-output "loop1\r*\nloop2\r*\n" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/execute/torture/gat1.rs b/gcc/testsuite/rust/execute/torture/gat1.rs
index 8310a588380..9a60986d945 100644
--- a/gcc/testsuite/rust/execute/torture/gat1.rs
+++ b/gcc/testsuite/rust/execute/torture/gat1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_desugar-2.rs b/gcc/testsuite/rust/execute/torture/impl_desugar-2.rs
index c73ea34c6da..d1d63ceda15 100644
--- a/gcc/testsuite/rust/execute/torture/impl_desugar-2.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_desugar-2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_desugar.rs b/gcc/testsuite/rust/execute/torture/impl_desugar.rs
index 22d39519f30..77309de2e66 100644
--- a/gcc/testsuite/rust/execute/torture/impl_desugar.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_desugar.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_rpit1.rs b/gcc/testsuite/rust/execute/torture/impl_rpit1.rs
index 8ce5f21ef87..9de4dff7678 100644
--- a/gcc/testsuite/rust/execute/torture/impl_rpit1.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_rpit1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_rpit2.rs b/gcc/testsuite/rust/execute/torture/impl_rpit2.rs
index f7cbbb66864..0f2e7e0d633 100644
--- a/gcc/testsuite/rust/execute/torture/impl_rpit2.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_rpit2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_rpit3.rs b/gcc/testsuite/rust/execute/torture/impl_rpit3.rs
index dd68eb29ef9..ec55f6af0cf 100644
--- a/gcc/testsuite/rust/execute/torture/impl_rpit3.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_rpit3.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_trait1.rs b/gcc/testsuite/rust/execute/torture/impl_trait1.rs
index 33a5c8cf1db..e578ed86936 100644
--- a/gcc/testsuite/rust/execute/torture/impl_trait1.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_trait1.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_trait2.rs b/gcc/testsuite/rust/execute/torture/impl_trait2.rs
index 29f393d679d..d13765e428b 100644
--- a/gcc/testsuite/rust/execute/torture/impl_trait2.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_trait2.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_trait3.rs b/gcc/testsuite/rust/execute/torture/impl_trait3.rs
index c1cec07bc4c..588b11d0935 100644
--- a/gcc/testsuite/rust/execute/torture/impl_trait3.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_trait3.rs
@@ -1,4 +1,5 @@
 /* { dg-output "Hello from Message\r*\n" } */
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/impl_trait4.rs b/gcc/testsuite/rust/execute/torture/impl_trait4.rs
index 67d00957e3d..e054949b558 100644
--- a/gcc/testsuite/rust/execute/torture/impl_trait4.rs
+++ b/gcc/testsuite/rust/execute/torture/impl_trait4.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/index1.rs b/gcc/testsuite/rust/execute/torture/index1.rs
index 19e58e32b16..1071b35f2de 100644
--- a/gcc/testsuite/rust/execute/torture/index1.rs
+++ b/gcc/testsuite/rust/execute/torture/index1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1120.rs b/gcc/testsuite/rust/execute/torture/issue-1120.rs
index 7dfa26fc14e..d7ef483ff93 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1120.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1120.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1133.rs b/gcc/testsuite/rust/execute/torture/issue-1133.rs
index 29f532e5c96..788b0ea08b8 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1133.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1133.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1198.rs b/gcc/testsuite/rust/execute/torture/issue-1198.rs
index d5c3d895783..d50faba0fb0 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1198.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1198.rs
@@ -1,4 +1,6 @@
 /* { dg-output "foo_deref\r*\nimm_deref\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-1232.rs b/gcc/testsuite/rust/execute/torture/issue-1232.rs
index 6fb42b3167d..d0db0eed544 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1232.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1232.rs
@@ -2,6 +2,7 @@
 // { dg-output "slice_access=3\r*\n" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1249.rs b/gcc/testsuite/rust/execute/torture/issue-1249.rs
index e7a261c1a0b..548600a242c 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1249.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1249.rs
@@ -1,6 +1,7 @@
 // { dg-options "-w" }
 // { dg-output "1\r*\n2\r*\n" }
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1436.rs b/gcc/testsuite/rust/execute/torture/issue-1436.rs
index 5d909078b5e..23620ab7835 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1436.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1436.rs
@@ -2,6 +2,7 @@
 
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1481.rs b/gcc/testsuite/rust/execute/torture/issue-1481.rs
index 2ff78d9b605..e63e2bde582 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1481.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1481.rs
@@ -1,5 +1,6 @@
 /* { dg-output "called Foo::print\\(\\)\r*" } */
 /* { dg-options "-w" } */
+#![feature(lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/execute/torture/issue-1482.rs b/gcc/testsuite/rust/execute/torture/issue-1482.rs
index ed8dc814610..3b1b3987af4 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1482.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1482.rs
@@ -1,3 +1,5 @@
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1496.rs b/gcc/testsuite/rust/execute/torture/issue-1496.rs
index 36291a74236..26dd1ef8795 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1496.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1496.rs
@@ -1,4 +1,6 @@
 /* { dg-output "foo_deref\r*\nimm_deref\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-1720-2.rs b/gcc/testsuite/rust/execute/torture/issue-1720-2.rs
index 9c5356ed736..d90072fb958 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1720-2.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1720-2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-1720.rs b/gcc/testsuite/rust/execute/torture/issue-1720.rs
index 22182825490..5da45eed531 100644
--- a/gcc/testsuite/rust/execute/torture/issue-1720.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-1720.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-2005.rs b/gcc/testsuite/rust/execute/torture/issue-2005.rs
index 87edb95988d..29d445497dc 100644
--- a/gcc/testsuite/rust/execute/torture/issue-2005.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-2005.rs
@@ -1,6 +1,6 @@
 // { dg-additional-options "-w" }
 /* { dg-output "WORKS\r?\n" } */
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/issue-2052.rs b/gcc/testsuite/rust/execute/torture/issue-2052.rs
index bf5d6a7cfbc..a30ddc4f5d3 100644
--- a/gcc/testsuite/rust/execute/torture/issue-2052.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-2052.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-2179.rs b/gcc/testsuite/rust/execute/torture/issue-2179.rs
index 8a5ec1bf32e..c5da7ee7518 100644
--- a/gcc/testsuite/rust/execute/torture/issue-2179.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-2179.rs
@@ -1,4 +1,5 @@
 // { dg-output "123\r*\n" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-2180.rs b/gcc/testsuite/rust/execute/torture/issue-2180.rs
index 6bd71720e48..ee18c8be8d4 100644
--- a/gcc/testsuite/rust/execute/torture/issue-2180.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-2180.rs
@@ -1,4 +1,5 @@
 // { dg-output "123\r*\n" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-2236.rs b/gcc/testsuite/rust/execute/torture/issue-2236.rs
index 850b99718ef..b7f28885eb5 100644
--- a/gcc/testsuite/rust/execute/torture/issue-2236.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-2236.rs
@@ -1,4 +1,5 @@
 // { dg-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-2583.rs b/gcc/testsuite/rust/execute/torture/issue-2583.rs
index 4ff12fca49e..c45d61da421 100644
--- a/gcc/testsuite/rust/execute/torture/issue-2583.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-2583.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-3126.rs b/gcc/testsuite/rust/execute/torture/issue-3126.rs
index f5051467f02..65bc07da112 100644
--- a/gcc/testsuite/rust/execute/torture/issue-3126.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-3126.rs
@@ -1,4 +1,6 @@
 /* { dg-output "child\r*\n" }*/
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-3381.rs b/gcc/testsuite/rust/execute/torture/issue-3381.rs
index 62dbcd0b2fd..02d96d766aa 100644
--- a/gcc/testsuite/rust/execute/torture/issue-3381.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-3381.rs
@@ -1,4 +1,6 @@
 /* { dg-output "Err: 15\r*\n" } */
+#![feature(lang_items)]
+
 #[lang = "sized"]
 trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/issue-3502.rs b/gcc/testsuite/rust/execute/torture/issue-3502.rs
index f07a126b66a..aa3885896c3 100644
--- a/gcc/testsuite/rust/execute/torture/issue-3502.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-3502.rs
@@ -1,4 +1,6 @@
 /* { dg-output "parent 123\r*\nchild\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-3836.rs b/gcc/testsuite/rust/execute/torture/issue-3836.rs
index 61ad42492e7..5c937367581 100644
--- a/gcc/testsuite/rust/execute/torture/issue-3836.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-3836.rs
@@ -1,7 +1,7 @@
 // { dg-options "-w" }
 // { dg-output "less\r*\n" }
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/issue-647.rs b/gcc/testsuite/rust/execute/torture/issue-647.rs
index 6a3565571ef..fbf4a1ec9e4 100644
--- a/gcc/testsuite/rust/execute/torture/issue-647.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-647.rs
@@ -1,4 +1,6 @@
 /* { dg-output "Hello World 123\r*\n" }*/
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-845.rs b/gcc/testsuite/rust/execute/torture/issue-845.rs
index b11ccd5374a..060cf0be793 100644
--- a/gcc/testsuite/rust/execute/torture/issue-845.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-845.rs
@@ -1,5 +1,7 @@
 // { dg-output "Foo::bar\r*\n" }
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-851.rs b/gcc/testsuite/rust/execute/torture/issue-851.rs
index 1361235b978..093143f9b3c 100644
--- a/gcc/testsuite/rust/execute/torture/issue-851.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-851.rs
@@ -1,4 +1,6 @@
 /* { dg-output "Result: 123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/issue-858.rs b/gcc/testsuite/rust/execute/torture/issue-858.rs
index 0b1118b4f8d..63518cee101 100644
--- a/gcc/testsuite/rust/execute/torture/issue-858.rs
+++ b/gcc/testsuite/rust/execute/torture/issue-858.rs
@@ -1,4 +1,6 @@
 /* { dg-output "Result: 123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/iter1.rs b/gcc/testsuite/rust/execute/torture/iter1.rs
index 233eb60383b..84b5033e013 100644
--- a/gcc/testsuite/rust/execute/torture/iter1.rs
+++ b/gcc/testsuite/rust/execute/torture/iter1.rs
@@ -1,5 +1,5 @@
 // { dg-output "1\r*\n2\r*\n" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 pub use option::Option::{self, None, Some};
 pub use result::Result::{self, Err, Ok};
diff --git a/gcc/testsuite/rust/execute/torture/macros23.rs b/gcc/testsuite/rust/execute/torture/macros23.rs
index b27985d3bef..ef958af6954 100644
--- a/gcc/testsuite/rust/execute/torture/macros23.rs
+++ b/gcc/testsuite/rust/execute/torture/macros23.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/macros28.rs b/gcc/testsuite/rust/execute/torture/macros28.rs
index 46d9cfcac0c..db1d9f21ca8 100644
--- a/gcc/testsuite/rust/execute/torture/macros28.rs
+++ b/gcc/testsuite/rust/execute/torture/macros28.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/method2.rs b/gcc/testsuite/rust/execute/torture/method2.rs
index e5f630a6d4f..0355a750c65 100644
--- a/gcc/testsuite/rust/execute/torture/method2.rs
+++ b/gcc/testsuite/rust/execute/torture/method2.rs
@@ -1,5 +1,7 @@
 // { dg-additional-options "-w" }
 // { dg-output "foo_deref\r*\nimm_deref\r*\n" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/method3.rs b/gcc/testsuite/rust/execute/torture/method3.rs
index 9a7865ca979..70b77923f86 100644
--- a/gcc/testsuite/rust/execute/torture/method3.rs
+++ b/gcc/testsuite/rust/execute/torture/method3.rs
@@ -1,5 +1,7 @@
 // { dg-additional-options "-w" }
 // { dg-output "mut_deref\r*\nfoobar: 123\r*\n" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/method4.rs b/gcc/testsuite/rust/execute/torture/method4.rs
index e20618f0635..f4b3a3352a9 100644
--- a/gcc/testsuite/rust/execute/torture/method4.rs
+++ b/gcc/testsuite/rust/execute/torture/method4.rs
@@ -1,5 +1,7 @@
 // { dg-additional-options "-w" }
 // { dg-output "mut_deref\r*\nfoobar: 123\r*\n" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/min_specialization2.rs b/gcc/testsuite/rust/execute/torture/min_specialization2.rs
index 74faee4eb2d..b3eac27b2f0 100644
--- a/gcc/testsuite/rust/execute/torture/min_specialization2.rs
+++ b/gcc/testsuite/rust/execute/torture/min_specialization2.rs
@@ -1,4 +1,4 @@
-#![feature(min_specialization)]
+#![feature(min_specialization, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/execute/torture/min_specialization3.rs b/gcc/testsuite/rust/execute/torture/min_specialization3.rs
index 9eccd974dae..b73a8acea4e 100644
--- a/gcc/testsuite/rust/execute/torture/min_specialization3.rs
+++ b/gcc/testsuite/rust/execute/torture/min_specialization3.rs
@@ -1,4 +1,4 @@
-#![feature(min_specialization)]
+#![feature(min_specialization, lang_items)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_1.rs b/gcc/testsuite/rust/execute/torture/operator_overload_1.rs
index 9aed3933c42..0fc6372d6c3 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_1.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_1.rs
@@ -1,4 +1,6 @@
 /* { dg-output "3\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_10.rs b/gcc/testsuite/rust/execute/torture/operator_overload_10.rs
index 921ec5f6fe9..6989347edb3 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_10.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_10.rs
@@ -1,4 +1,6 @@
 /* { dg-output "foo_deref\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_11.rs b/gcc/testsuite/rust/execute/torture/operator_overload_11.rs
index f0359fb4d80..d0b45a7212c 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_11.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_11.rs
@@ -1,5 +1,7 @@
 // { dg-output "1\r*\n" }
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_12.rs b/gcc/testsuite/rust/execute/torture/operator_overload_12.rs
index 2cd5c69f1e1..a0e1bc8f18f 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_12.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_12.rs
@@ -1,5 +1,7 @@
 // { dg-output "1\r*\n" }
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_2.rs b/gcc/testsuite/rust/execute/torture/operator_overload_2.rs
index 68624154742..dfc2530068f 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_2.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_2.rs
@@ -1,4 +1,6 @@
 /* { dg-output "3\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_3.rs b/gcc/testsuite/rust/execute/torture/operator_overload_3.rs
index 6c1a8b8f8b8..68071430a33 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_3.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_3.rs
@@ -1,4 +1,6 @@
 /* { dg-output "3\r*\n3\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_4.rs b/gcc/testsuite/rust/execute/torture/operator_overload_4.rs
index c8235c6a822..3f68bf1a92f 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_4.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_4.rs
@@ -1,4 +1,6 @@
 /* { dg-output "neg\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_5.rs b/gcc/testsuite/rust/execute/torture/operator_overload_5.rs
index eeef5bc576b..b5c1fd609f5 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_5.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_5.rs
@@ -1,4 +1,6 @@
 /* { dg-output "not\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_6.rs b/gcc/testsuite/rust/execute/torture/operator_overload_6.rs
index d5ffae51fab..0a69758bb32 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_6.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_6.rs
@@ -1,4 +1,6 @@
 /* { dg-output "add_assign\r*\n3\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_7.rs b/gcc/testsuite/rust/execute/torture/operator_overload_7.rs
index 7226b26920b..e1bd7c41b2e 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_7.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_7.rs
@@ -1,4 +1,6 @@
 /* { dg-output "imm_deref\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_8.rs b/gcc/testsuite/rust/execute/torture/operator_overload_8.rs
index 4b589a8af45..8324768354c 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_8.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_8.rs
@@ -1,4 +1,6 @@
 /* { dg-output "imm_deref\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/operator_overload_9.rs b/gcc/testsuite/rust/execute/torture/operator_overload_9.rs
index 5fc042850ed..4d10f78ed65 100644
--- a/gcc/testsuite/rust/execute/torture/operator_overload_9.rs
+++ b/gcc/testsuite/rust/execute/torture/operator_overload_9.rs
@@ -1,4 +1,6 @@
 /* { dg-output "mut_deref\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/partial-eq-1.rs b/gcc/testsuite/rust/execute/torture/partial-eq-1.rs
index db123a1b5e7..fa918f3e89c 100644
--- a/gcc/testsuite/rust/execute/torture/partial-eq-1.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-eq-1.rs
@@ -1,5 +1,6 @@
 /* { dg-output "a == b\r*\na != c\r*\n" }*/
 /* { dg-options "-w" } */
+#![feature(lang_items)]
 
 mod core {
     mod marker {
diff --git a/gcc/testsuite/rust/execute/torture/partial-eq-2.rs b/gcc/testsuite/rust/execute/torture/partial-eq-2.rs
index debed8c83f3..e132ef07de1 100644
--- a/gcc/testsuite/rust/execute/torture/partial-eq-2.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-eq-2.rs
@@ -1,6 +1,7 @@
 /* { dg-output "a == b\r*\na != c\r*\n" }*/
 /* { dg-options "-w" } */
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/partial-eq-3.rs b/gcc/testsuite/rust/execute/torture/partial-eq-3.rs
index 849910afc83..4ace3d92320 100644
--- a/gcc/testsuite/rust/execute/torture/partial-eq-3.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-eq-3.rs
@@ -1,7 +1,7 @@
 /* { dg-output "a == b\r*\na != c\r*\n" }*/
 /* { dg-options "-w" } */
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/partial-eq-4.rs b/gcc/testsuite/rust/execute/torture/partial-eq-4.rs
index b6997d8592f..d1835db1626 100644
--- a/gcc/testsuite/rust/execute/torture/partial-eq-4.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-eq-4.rs
@@ -1,7 +1,7 @@
 /* { dg-output "a == b\r*\na != c\r*\n" }*/
 /* { dg-options "-w" } */
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/partial-ord-1.rs b/gcc/testsuite/rust/execute/torture/partial-ord-1.rs
index a3558e7cb7a..b1546a3e928 100644
--- a/gcc/testsuite/rust/execute/torture/partial-ord-1.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-ord-1.rs
@@ -1,4 +1,5 @@
 /* { dg-output "x == y\r*\nx > z\r*\n" }*/
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/partial-ord-2.rs b/gcc/testsuite/rust/execute/torture/partial-ord-2.rs
index d3b713fc5e2..76cdc2a1792 100644
--- a/gcc/testsuite/rust/execute/torture/partial-ord-2.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-ord-2.rs
@@ -1,6 +1,6 @@
 /* { dg-output "x == y\r*\nx > z\r*\n" }*/
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/partial-ord-3.rs b/gcc/testsuite/rust/execute/torture/partial-ord-3.rs
index 7aec07c5caa..dd8072fe910 100644
--- a/gcc/testsuite/rust/execute/torture/partial-ord-3.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-ord-3.rs
@@ -1,7 +1,7 @@
 /* { dg-output "x == y\r*\nx > z\r*\nx < z\r*\nx >= y\r*\nx <= y\r*\n" } */
 /* { dg-options "-w" } */
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/partial-ord-4.rs b/gcc/testsuite/rust/execute/torture/partial-ord-4.rs
index fd52f328c58..de130745e68 100644
--- a/gcc/testsuite/rust/execute/torture/partial-ord-4.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-ord-4.rs
@@ -1,7 +1,7 @@
 /* { dg-output "a == b\r*\na != c\r*\n" }*/
 /* { dg-options "-w" } */
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/partial-ord-5.rs b/gcc/testsuite/rust/execute/torture/partial-ord-5.rs
index 721d2aa0065..b87a08ebcca 100644
--- a/gcc/testsuite/rust/execute/torture/partial-ord-5.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-ord-5.rs
@@ -1,7 +1,7 @@
 /* { dg-output "a == b\r*\na != c\r*\na >= c\r*\na <= b\r*\na > c\r*\nc < b\r*\n" } */
 /* { dg-options "-w" } */
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/partial-ord-6.rs b/gcc/testsuite/rust/execute/torture/partial-ord-6.rs
index 5d64f8c2f84..04f13cdac37 100644
--- a/gcc/testsuite/rust/execute/torture/partial-ord-6.rs
+++ b/gcc/testsuite/rust/execute/torture/partial-ord-6.rs
@@ -1,7 +1,7 @@
 // { dg-additional-options "-w" }
 /* { dg-output "Foo A < B\r?\nFoo B < C\r?\nFoo C == C\r?\nBar x < y\r?\nBarFull s1 < s2\r?\n" } */
 
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 mod core {
     mod option {
diff --git a/gcc/testsuite/rust/execute/torture/prefetch_data.rs b/gcc/testsuite/rust/execute/torture/prefetch_data.rs
index 2a847fbcb39..a155e670d3b 100644
--- a/gcc/testsuite/rust/execute/torture/prefetch_data.rs
+++ b/gcc/testsuite/rust/execute/torture/prefetch_data.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/ref-pattern2.rs b/gcc/testsuite/rust/execute/torture/ref-pattern2.rs
index 8e7172406c4..cde7ea53331 100644
--- a/gcc/testsuite/rust/execute/torture/ref-pattern2.rs
+++ b/gcc/testsuite/rust/execute/torture/ref-pattern2.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/sip-hasher.rs b/gcc/testsuite/rust/execute/torture/sip-hasher.rs
index 60826a3ed01..32cdc22fe91 100644
--- a/gcc/testsuite/rust/execute/torture/sip-hasher.rs
+++ b/gcc/testsuite/rust/execute/torture/sip-hasher.rs
@@ -1,8 +1,7 @@
 // { dg-skip-if "" { *-*-* } { "-m32" } { "" } }
 // { dg-options "-w" }
 // { dg-output "Hash: 0x63d53fd2170bbb8c\r*\n" }
-#![feature(intrinsics)]
-#![feature(rustc_attrs)]
+#![feature(intrinsics, lang_items, rustc_attrs)]
 
 #[lang = "sized"]
 trait Sized {}
diff --git a/gcc/testsuite/rust/execute/torture/slice-magic.rs b/gcc/testsuite/rust/execute/torture/slice-magic.rs
index 1f56187ee5d..521a2513f62 100644
--- a/gcc/testsuite/rust/execute/torture/slice-magic.rs
+++ b/gcc/testsuite/rust/execute/torture/slice-magic.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/slice-magic2.rs b/gcc/testsuite/rust/execute/torture/slice-magic2.rs
index 20f113ef97d..75c04f382be 100644
--- a/gcc/testsuite/rust/execute/torture/slice-magic2.rs
+++ b/gcc/testsuite/rust/execute/torture/slice-magic2.rs
@@ -1,6 +1,7 @@
 // { dg-additional-options "-w" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/slice1.rs b/gcc/testsuite/rust/execute/torture/slice1.rs
index 2683179c758..317ff7a8187 100644
--- a/gcc/testsuite/rust/execute/torture/slice1.rs
+++ b/gcc/testsuite/rust/execute/torture/slice1.rs
@@ -1,4 +1,5 @@
 // { dg-additional-options "-w" }
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/str-layout1.rs b/gcc/testsuite/rust/execute/torture/str-layout1.rs
index fb3b4e34a7c..a28d2650862 100644
--- a/gcc/testsuite/rust/execute/torture/str-layout1.rs
+++ b/gcc/testsuite/rust/execute/torture/str-layout1.rs
@@ -2,6 +2,7 @@
 // { dg-output "t1sz=5 t2sz=10\r*" }
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/trait1.rs b/gcc/testsuite/rust/execute/torture/trait1.rs
index f8a5959edd5..db5b6e2473e 100644
--- a/gcc/testsuite/rust/execute/torture/trait1.rs
+++ b/gcc/testsuite/rust/execute/torture/trait1.rs
@@ -1,4 +1,6 @@
 /* { dg-output "S::f\r*\nT1::f\r*\nT2::f\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait10.rs b/gcc/testsuite/rust/execute/torture/trait10.rs
index 4e576eb8249..4eb9546af77 100644
--- a/gcc/testsuite/rust/execute/torture/trait10.rs
+++ b/gcc/testsuite/rust/execute/torture/trait10.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait11.rs b/gcc/testsuite/rust/execute/torture/trait11.rs
index cca084ae8d0..84add740ed1 100644
--- a/gcc/testsuite/rust/execute/torture/trait11.rs
+++ b/gcc/testsuite/rust/execute/torture/trait11.rs
@@ -1,4 +1,5 @@
 /* { dg-output "3\r*\n" } */
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/trait12.rs b/gcc/testsuite/rust/execute/torture/trait12.rs
index d174a891409..dd7a6442c6c 100644
--- a/gcc/testsuite/rust/execute/torture/trait12.rs
+++ b/gcc/testsuite/rust/execute/torture/trait12.rs
@@ -1,4 +1,6 @@
 /* { dg-output "3\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait13.rs b/gcc/testsuite/rust/execute/torture/trait13.rs
index 0d8f8948705..25912bd8672 100644
--- a/gcc/testsuite/rust/execute/torture/trait13.rs
+++ b/gcc/testsuite/rust/execute/torture/trait13.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n456\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait14.rs b/gcc/testsuite/rust/execute/torture/trait14.rs
index 759950e6fe2..ebc0c5c8035 100644
--- a/gcc/testsuite/rust/execute/torture/trait14.rs
+++ b/gcc/testsuite/rust/execute/torture/trait14.rs
@@ -1,4 +1,5 @@
 /* { dg-output "parent123\r*\nchild\r*\n" } */
+#![feature(lang_items)]
 
 extern "C" {
     fn printf(s: *const i8, ...);
diff --git a/gcc/testsuite/rust/execute/torture/trait15.rs b/gcc/testsuite/rust/execute/torture/trait15.rs
index 53469d78f53..59f8dc3bcce 100644
--- a/gcc/testsuite/rust/execute/torture/trait15.rs
+++ b/gcc/testsuite/rust/execute/torture/trait15.rs
@@ -1,6 +1,8 @@
 /* { dg-output "parent123\r*\nchild\r*\n" } */
 // Testing generics passing with supertraits
 
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait2.rs b/gcc/testsuite/rust/execute/torture/trait2.rs
index d5fd5466fe9..db69c1e83fc 100644
--- a/gcc/testsuite/rust/execute/torture/trait2.rs
+++ b/gcc/testsuite/rust/execute/torture/trait2.rs
@@ -1,4 +1,6 @@
 /* { dg-output "Bar::A = 456\r*\n<Foo as Bar>::A = 456\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait3.rs b/gcc/testsuite/rust/execute/torture/trait3.rs
index 668b43760b4..d39d3241a64 100644
--- a/gcc/testsuite/rust/execute/torture/trait3.rs
+++ b/gcc/testsuite/rust/execute/torture/trait3.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123, 777\r*" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait4.rs b/gcc/testsuite/rust/execute/torture/trait4.rs
index 61c2d158433..fb1eaaed92a 100644
--- a/gcc/testsuite/rust/execute/torture/trait4.rs
+++ b/gcc/testsuite/rust/execute/torture/trait4.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n" }*/
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait5.rs b/gcc/testsuite/rust/execute/torture/trait5.rs
index 7cd7d1a19ef..67b5dd4eae2 100644
--- a/gcc/testsuite/rust/execute/torture/trait5.rs
+++ b/gcc/testsuite/rust/execute/torture/trait5.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait6.rs b/gcc/testsuite/rust/execute/torture/trait6.rs
index de5ddc1ea9e..baa075be7d4 100644
--- a/gcc/testsuite/rust/execute/torture/trait6.rs
+++ b/gcc/testsuite/rust/execute/torture/trait6.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait7.rs b/gcc/testsuite/rust/execute/torture/trait7.rs
index 21f1575218b..47d40aeae3d 100644
--- a/gcc/testsuite/rust/execute/torture/trait7.rs
+++ b/gcc/testsuite/rust/execute/torture/trait7.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait8.rs b/gcc/testsuite/rust/execute/torture/trait8.rs
index 69e784ef3b4..cbce3c1b361 100644
--- a/gcc/testsuite/rust/execute/torture/trait8.rs
+++ b/gcc/testsuite/rust/execute/torture/trait8.rs
@@ -1,4 +1,6 @@
 /* { dg-output "123\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/trait9.rs b/gcc/testsuite/rust/execute/torture/trait9.rs
index f60554adae6..3448eb88a77 100644
--- a/gcc/testsuite/rust/execute/torture/trait9.rs
+++ b/gcc/testsuite/rust/execute/torture/trait9.rs
@@ -1,4 +1,6 @@
 /* { dg-output "3\r*\n" } */
+#![feature(lang_items)]
+
 extern "C" {
     fn printf(s: *const i8, ...);
 }
diff --git a/gcc/testsuite/rust/execute/torture/transmute1.rs b/gcc/testsuite/rust/execute/torture/transmute1.rs
index d89affd5b82..8da1ae732a0 100644
--- a/gcc/testsuite/rust/execute/torture/transmute1.rs
+++ b/gcc/testsuite/rust/execute/torture/transmute1.rs
@@ -1,5 +1,5 @@
 // { dg-additional-options "-w" }
-#![feature(intrinsics)]
+#![feature(intrinsics, lang_items)]
 
 extern "rust-intrinsic" {
     fn transmute<T, U>(value: T) -> U;
diff --git a/gcc/testsuite/rust/execute/torture/wrapping_op1.rs b/gcc/testsuite/rust/execute/torture/wrapping_op1.rs
index e0c100cd20c..ba9b1686779 100644
--- a/gcc/testsuite/rust/execute/torture/wrapping_op1.rs
+++ b/gcc/testsuite/rust/execute/torture/wrapping_op1.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/execute/torture/wrapping_op2.rs b/gcc/testsuite/rust/execute/torture/wrapping_op2.rs
index 69289928100..5e6a37db9b7 100644
--- a/gcc/testsuite/rust/execute/torture/wrapping_op2.rs
+++ b/gcc/testsuite/rust/execute/torture/wrapping_op2.rs
@@ -1,5 +1,6 @@
 #![feature(intrinsics)]
 
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/link/generic_function_1.rs b/gcc/testsuite/rust/link/generic_function_1.rs
index 46d0e825b9d..dab62f0d00d 100644
--- a/gcc/testsuite/rust/link/generic_function_1.rs
+++ b/gcc/testsuite/rust/link/generic_function_1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}
 
diff --git a/gcc/testsuite/rust/link/trait_import_1.rs b/gcc/testsuite/rust/link/trait_import_1.rs
index e54b0e19d44..589871d016e 100644
--- a/gcc/testsuite/rust/link/trait_import_1.rs
+++ b/gcc/testsuite/rust/link/trait_import_1.rs
@@ -1,3 +1,4 @@
+#![feature(lang_items)]
 #[lang = "sized"]
 pub trait Sized {}