Remove non-leaf parsing failure error

gcc/rust/parse/rust-parse-impl.h

@@ -431,10 +431,6 @@ Parser<ManagedTokenSource>::parse_items ()
       std::unique_ptr<AST::Item> item = parse_item (false);
       if (item == nullptr)
 	{
-	  Error error (lexer.peek_token ()->get_locus (),
-		       "failed to parse item in crate");
-	  add_error (std::move (error));
-
 	  // TODO: should all items be cleared?
 	  items = std::vector<std::unique_ptr<AST::Item>> ();
 	  break;

gcc/testsuite/rust/compile/braced_macro_arm.rs

@@ -12,7 +12,6 @@ fn h(c: bool) {
         false => ()
         // { dg-error "exprwithoutblock requires comma after match case expression in match arm \\(if not final case\\)" "" { target *-*-* } .-1 }
         // { dg-error "unrecognised token .false. for start of item" "" { target *-*-* } .-2 }
-        // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
     };
 }
 

gcc/testsuite/rust/compile/decl_macro6.rs

@@ -2,4 +2,3 @@
 macro m {}
 // { dg-error "unexpected token .\}. - expecting delimiters .for a macro matcher." "" { target *-*-* } .-1 }
 // { dg-error "required first macro rule in declarative macro definition could not be parsed" "" { target *-*-* } .-2 }
-// { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }

gcc/testsuite/rust/compile/decl_macro7.rs

@@ -1,4 +1,3 @@
 #![feature(decl_macro)]
 pub macro hello() [ "Hello" ]
 // { dg-error "only braces can be used for a macro transcriber in declarative macro definition" "" { target *-*-* } .-1 }
-// { dg-error "failed to parse item in crate" }

gcc/testsuite/rust/compile/extern_type_item_missing_semi.rs

@@ -4,4 +4,3 @@ extern "C" {
     type F;
     type E // { dg-error "failed to parse" }
 } // { dg-error "expecting" }
-// { dg-error "failed to parse item in crate" ""  { target *-*-* } .-1 }

gcc/testsuite/rust/compile/issue-2187.rs

@@ -8,4 +8,3 @@ const D: &'static str = "
 ";
 ERROR_TIME
 // { dg-error "unrecognised token" "" { target *-*-* } .-1 }
-// { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }

gcc/testsuite/rust/compile/issue-407-2.rs

@@ -10,7 +10,6 @@ pub fn loopy()  {
             // { dg-error {failed to parse if body block expression in if expression} "" { target *-*-* } .-2 }
             // { dg-error {could not parse loop body in \(infinite\) loop expression} "" { target *-*-* } .-3 }
             // { dg-error {unrecognised token 'integer literal' for start of item} "" { target *-*-* } .-4 }
-            // { dg-error {failed to parse item in crate} "" { target *-*-* } .-5 }
         } else {
             break;
         }

gcc/testsuite/rust/compile/issue-407.rs

@@ -4,5 +4,4 @@ fn test()  {
     a + = 1; // { dg-error "found unexpected token '=' in null denotation" }
     // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-1 }
     // { dg-error {unrecognised token 'integer literal' for start of item} "" { target *-*-* } .-2 }
-    // { dg-error {failed to parse item in crate} "" { target *-*-* } .-3 }
 }

gcc/testsuite/rust/compile/issue-4162.rs

@@ -3,7 +3,6 @@ pub fn main() {
     // { dg-error "should be at least 1 pattern" "" { target *-*-* } .-1 }
     // { dg-error "failed to parse statement or expression in block expression" "" { target *-*-* } .-2 }
     // { dg-error "unrecognised token .=. for start of item" "" { target *-*-* } .-3 }
-    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-4 }
     {}
 }
 

gcc/testsuite/rust/compile/issue-867.rs

@@ -3,6 +3,5 @@ fn main() {
     let a = _ + 123; // { dg-error "use of '_' is not allowed on the right-side of an assignment" }
                      // { dg-error {failed to parse expression in let statement} "" { target *-*-* } .-1  }
                      // { dg-error {failed to parse statement or expression in block expression} "" { target *-*-* } .-2 }
-                     // { dg-error {unrecognised token '\}' for start of item} "" { target *-*-* } .+2 }
-                     // { dg-error {failed to parse item in crate} "" { target *-*-* } .+1 }
+                     // { dg-error {unrecognised token '\}' for start of item} "" { target *-*-* } .+1 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro-issue1053-2.rs

@@ -1,5 +1,4 @@
 macro_rules! m {
     ($e:expr $(forbidden)*) => {{}}; // { dg-error "token .identifier. is not allowed after .expr. fragment" }
                                      // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-1 }
-                                     // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro-issue1395-2.rs

@@ -2,6 +2,5 @@
 
 macro_rules! try {
     // { dg-error "expecting .identifier. but .try. found" "" { target *-*-* } .-1 }
-    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
     () => {};
 }

gcc/testsuite/rust/compile/macros/mbe/macro-issue3608.rs

@@ -7,6 +7,5 @@ impl Bar for
 
 fn main() { )// { dg-error "unexpected closing delimiter .\\). - token tree requires either paired delimiters or non-delimiter tokens" }
              // { dg-error "failed to parse token tree in delimited token tree - found .\\)." "" { target *-*-* } .-1 }
-             // { dg-error "unexpected token .end of file. - expecting closing delimiter .\}. .for a delimited token tree." "" { target *-*-* } .+3 }
-             // { dg-error "unexpected token .end of file. - expecting closing delimiter .\\). .for a macro invocation semi." "" { target *-*-* } .+2 }
-             // { dg-error "failed to parse item in crate" "" { target *-*-* } .+1 }
+             // { dg-error "unexpected token .end of file. - expecting closing delimiter .\}. .for a delimited token tree." "" { target *-*-* } .+2 }
+             // { dg-error "unexpected token .end of file. - expecting closing delimiter .\\). .for a macro invocation semi." "" { target *-*-* } .+1 }

gcc/testsuite/rust/compile/macros/mbe/macro27.rs

@@ -2,7 +2,6 @@ macro_rules! m {
     ($a:expr tok) => {
         // { dg-error "token .identifier. is not allowed after .expr. fragment" "" { target *-*-* } .-1 }
         // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-2 }
-        // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
         $a
     };
 }

gcc/testsuite/rust/compile/macros/mbe/macro28.rs

@@ -2,7 +2,6 @@ macro_rules! m {
     ($a:expr $(tok $es:expr)*) => {
         // { dg-error "token .identifier. is not allowed after .expr. fragment" "" { target *-*-* } .-1 }
         // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-2 }
-        // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
         $a
     };
 }

gcc/testsuite/rust/compile/macros/mbe/macro29.rs

@@ -2,7 +2,6 @@ macro_rules! m {
     ($($es:expr)* tok) => {
         // { dg-error "token .identifier. is not allowed after .expr. fragment" "" { target *-*-* } .-1 }
         // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-2 }
-        // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
         $a
     };
 }

gcc/testsuite/rust/compile/macros/mbe/macro30.rs

@@ -2,7 +2,6 @@ macro_rules! m {
     ($e:expr $f:expr) => {
         // { dg-error "fragment is not allowed after .expr. fragment" "" { target *-*-* } .-1 }
         // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-2 }
-        // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
         $e
     };
 }

gcc/testsuite/rust/compile/macros/mbe/macro31.rs

@@ -2,7 +2,6 @@ macro_rules! m {
     ($($e:expr)* $($f:expr)*) => {
         // { dg-error "fragment is not allowed after .expr. fragment" "" { target *-*-* } .-1 }
         // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-2 }
-        // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
         $e
     };
 }

gcc/testsuite/rust/compile/macros/mbe/macro33.rs

@@ -1,5 +1,4 @@
 macro_rules! forbidden_frag {
     ($t:ty $not_block:ident) => {{}}; // { dg-error "fragment specifier .ident. is not allowed after .ty. fragments" }
                                       // { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .-1 }
-                                      // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro35.rs

@@ -3,5 +3,4 @@ macro_rules! inside_matcher {
                                  // { dg-error "failed to parse macro matcher" "" { target *-*-* } .-1 }
                                  // { dg-error "failed to parse macro match" "" { target *-*-* } .-2 }
                                  // { dg-error "required first macro rule" "" { target *-*-* } .-3 }
-                                 // { dg-error "failed to parse item in crate" "" { target *-*-* } .-4 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro37.rs

@@ -1,5 +1,4 @@
 macro_rules! invalid_after_zeroable {
     ($e:expr $(,)* forbidden) => {{}}; // { dg-error "token .identifier. is not allowed after .expr. fragment" }
                                        // { dg-error "required first macro rule" "" { target *-*-* } .-1 }
-                                       // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro38.rs

@@ -1,5 +1,4 @@
 macro_rules! invalid_after_zeroable_multi {
     ($e:expr $(,)? $(;)* $(=>)? forbidden) => {{}}; // { dg-error "token .identifier. is not allowed after .expr. fragment" }
                                                     // { dg-error "required first macro rule" "" { target *-*-* } .-1 }
-                                                    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro39.rs

@@ -1,5 +1,4 @@
 macro_rules! m {
     ($e:expr (, parenthesis_forbidden)) => {{}}; // { dg-error "token .\\(. at start of matcher is not allowed after .expr. fragment" }
                                                  // { dg-error "required first macro rule" "" { target *-*-* } .-1 }
-                                                 // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
 }

gcc/testsuite/rust/compile/macros/mbe/macro48.rs

@@ -1,8 +1,7 @@
 // Check that "priv" is not in the follow set of :vis.
 
-// { dg-error "token .priv. is not allowed after .vis. fragment" "#359" { target *-*-* } .+4 }
-// { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .+3 }
-// { dg-error "failed to parse item in crate" "" { target *-*-* } .+2 }
+// { dg-error "token .priv. is not allowed after .vis. fragment" "#359" { target *-*-* } .+3 }
+// { dg-error "required first macro rule in macro rules definition could not be parsed" "" { target *-*-* } .+2 }
 macro_rules! my_mac {
     ($v:vis priv) => {
         $v struct Foo(i32);

gcc/testsuite/rust/compile/parse_invalid_specialization.rs

@@ -1,4 +1,3 @@
 default fn f() {
     // { dg-error ".default. is only allowed on items within .impl. blocks" "" { target *-*-* } .-1 }
-    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }
 }

gcc/testsuite/rust/compile/parse_simple_path_fail_1.rs

@@ -1,3 +1,2 @@
 pub(in crate::) struct S;
 // { dg-error "expecting ... but .::. found" "" { target *-*-* } .-1 }
-// { dg-error "failed to parse item in crate" "" { target *-*-* } .-2 }

gcc/testsuite/rust/compile/parse_simple_path_fail_2.rs

@@ -5,5 +5,3 @@ mod A {
 use A{B};
 // { dg-error "unexpected token" "" { target *-*-* } .-1 }
 // { dg-error "could not parse use tree" "" { target *-*-* } .-2 }
-// { dg-error "failed to parse item in crate" "" { target *-*-* } 10 }
-// ^^^ TODO: should the above error happen at line 10?

gcc/testsuite/rust/compile/raw-byte-string-loc.rs

@@ -3,4 +3,3 @@ const X: &'static u8 = br#"12
 
 BREAK
 // { dg-error "unrecognised token" "" { target *-*-* } .-1 }
-// { dg-error "failed to parse item" "" { target *-*-* } .-2 }

gcc/testsuite/rust/compile/raw-string-loc.rs

@@ -3,4 +3,3 @@ const X: &'static str = r#"12
 
 BREAK
 // { dg-error "unrecognised token" "" { target *-*-* } .-1 }
-// { dg-error "failed to parse item" "" { target *-*-* } .-2 }

gcc/testsuite/rust/compile/self_const_ptr.rs

@@ -4,5 +4,4 @@ impl MyStruct {
     pub fn do_something(*const self) {}
     // { dg-error "cannot pass .self. by raw pointer" "" { target *-*-* } .-1 }
     // { dg-error "failed to parse inherent impl item in inherent impl" "" { target *-*-* } .-2 }
-    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
 }

gcc/testsuite/rust/compile/self_mut_ptr.rs

@@ -4,5 +4,4 @@ impl MyStruct {
     pub fn do_something(*mut self) {}
     // { dg-error "cannot pass .self. by raw pointer" "" { target *-*-* } .-1 }
     // { dg-error "failed to parse inherent impl item in inherent impl" "" { target *-*-* } .-2 }
-    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
 }

gcc/testsuite/rust/compile/self_ptr.rs

@@ -4,5 +4,4 @@ impl MyStruct {
     pub fn do_something(*self) {}
     // { dg-error "cannot pass .self. by raw pointer" "" { target *-*-* } .-1 }
     // { dg-error "failed to parse inherent impl item in inherent impl" "" { target *-*-* } .-2 }
-    // { dg-error "failed to parse item in crate" "" { target *-*-* } .-3 }
 }

gcc/testsuite/rust/compile/static_var1.rs

@@ -1,5 +1,5 @@
 static x = 3; // { dg-error "expecting ':' but '=' found" }
 
-fn main() {// { dg-error "failed to parse item in crate" }
+fn main() {
     let y = x +1;
 }

gcc/testsuite/rust/compile/torture/identifier-missing-impl-1.rs

@@ -4,7 +4,6 @@ impl I {
     fn () {
         // { dg-error {expecting 'identifier' but '\(' found} "" { target *-*-* } .-1 }
         // { dg-error {failed to parse inherent impl item in inherent impl} "" { target *-*-* } .-2 }
-        // { dg-error {failed to parse item in crate} "" { target *-*-* } .-3 }
     }
 }