Auto merge of #149124 - Zalathar:rollup-objfz6n, r=Zalathar

Rollup of 10 pull requests

Successful merges:

 - #146925 (Add doc for va_list APIs)
 - #147035 (alloc: fix `Debug` implementation of `ExtractIf`)
 - #147173 (Add support for hexagon-unknown-qurt target)
 - #148261 (rustc_public: Make Id types !Send / !Sync)
 - #148831 (Bump compiler dependencies)
 - #149041 (ignore unsized types in mips64 and sparc64 callconvs)
 - #149056 (fix the fragment_in_dst_padding_gets_overwritten test on s390x)
 - #149071 (Add test scaffolding for the `remote-test-client`)
 - #149095 (rustc-dev-guide subtree update)
 - #149108 ([AIX][ppc64le-linux-gnu] Add Amy Kwan to target maintainers)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Cargo.lock

@@ -20,6 +20,13 @@ rustc_public = { path = "../rustc_public" }
 rustc_public_bridge = { path = "../rustc_public_bridge" }
 # tidy-alphabetical-end
 
+# Pin these to avoid pulling in a package with a binary blob
+# <https://github.com/rust-lang/rust/pull/136395#issuecomment-2692769062>
+[target.'cfg(target_os = "wasi")'.dependencies]
+getrandom = "=0.3.3"
+wasi = "=0.14.2"
+
+
 [dependencies.tikv-jemalloc-sys]
 version = "0.6.0"
 optional = true

compiler/rustc/Cargo.toml

@@ -13,10 +13,15 @@ rustc_session = { path = "../rustc_session" }
 rustc_span = { path = "../rustc_span" }
 rustc_target = { path = "../rustc_target" }
 scoped-tls = "1.0"
-serde = { version = "1.0.125", features = [ "derive" ] }
+serde = { version = "1.0.125", features = ["derive"] }
 tracing = "0.1"
 # tidy-alphabetical-end
 
+[dev-dependencies]
+# tidy-alphabetical-start
+serde_json = "1.0.142"
+# tidy-alphabetical-end
+
 [features]
 # tidy-alphabetical-start
 # Provides access to APIs that expose internals of the rust compiler.

compiler/rustc_public/Cargo.toml

@@ -7,8 +7,8 @@ use serde::Serialize;
 use crate::compiler_interface::with;
 use crate::mir::FieldIdx;
 use crate::target::{MachineInfo, MachineSize as Size};
-use crate::ty::{Align, Ty, VariantIdx};
-use crate::{Error, Opaque, error};
+use crate::ty::{Align, Ty, VariantIdx, index_impl};
+use crate::{Error, Opaque, ThreadLocalIndex, error};
 
 /// A function ABI definition.
 #[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize)]
@@ -109,24 +109,16 @@ impl LayoutShape {
     }
 }
 
-#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Serialize)]
-pub struct Layout(usize);
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
+pub struct Layout(usize, ThreadLocalIndex);
+index_impl!(Layout);
 
 impl Layout {
     pub fn shape(self) -> LayoutShape {
         with(|cx| cx.layout_shape(self))
     }
 }
 
-impl crate::IndexedVal for Layout {
-    fn to_val(index: usize) -> Self {
-        Layout(index)
-    }
-    fn to_index(&self) -> usize {
-        self.0
-    }
-}
-
 /// Describes how the fields of a type are shaped in memory.
 #[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize)]
 pub enum FieldsShape {

compiler/rustc_public/src/abi.rs

@@ -25,7 +25,7 @@ use crate::ty::{
 use crate::unstable::{RustcInternal, Stable, new_item_kind};
 use crate::{
     AssocItems, Crate, CrateDef, CrateItem, CrateItems, CrateNum, DefId, Error, Filename,
-    ImplTraitDecls, ItemKind, Symbol, TraitDecls, alloc, mir,
+    ImplTraitDecls, ItemKind, Symbol, ThreadLocalIndex, TraitDecls, alloc, mir,
 };
 
 pub struct BridgeTys;
@@ -866,7 +866,7 @@ fn smir_crate<'tcx>(
 ) -> Crate {
     let name = cx.crate_name(crate_num);
     let is_local = cx.crate_is_local(crate_num);
-    let id = cx.crate_num_id(crate_num);
+    let id = CrateNum(cx.crate_num_id(crate_num), ThreadLocalIndex);
     debug!(?name, ?crate_num, "smir_crate");
     Crate { id, name, is_local }
 }

compiler/rustc_public/src/compiler_interface.rs

@@ -1,14 +1,13 @@
 //! Module that define a common trait for things that represent a crate definition,
 //! such as, a function, a trait, an enum, and any other definitions.
 
-use serde::Serialize;
-
-use crate::ty::{GenericArgs, Span, Ty};
-use crate::{AssocItems, Crate, Symbol, with};
+use crate::ty::{GenericArgs, Span, Ty, index_impl};
+use crate::{AssocItems, Crate, Symbol, ThreadLocalIndex, with};
 
 /// A unique identification number for each item accessible for the current compilation unit.
-#[derive(Clone, Copy, PartialEq, Eq, Hash, Serialize)]
-pub struct DefId(pub(crate) usize);
+#[derive(Clone, Copy, PartialEq, Eq, Hash)]
+pub struct DefId(pub(crate) usize, ThreadLocalIndex);
+index_impl!(DefId);
 
 impl DefId {
     /// Return fully qualified name of this definition

compiler/rustc_public/src/crate_def.rs

@@ -17,6 +17,7 @@
 //! [crates.io](https://crates.io).
 
 use std::fmt::Debug;
+use std::marker::PhantomData;
 use std::{fmt, io};
 
 pub(crate) use rustc_public_bridge::IndexedVal;
@@ -33,7 +34,10 @@ pub use crate::crate_def::{CrateDef, CrateDefItems, CrateDefType, DefId};
 pub use crate::error::*;
 use crate::mir::mono::StaticDef;
 use crate::mir::{Body, Mutability};
-use crate::ty::{AssocItem, FnDef, ForeignModuleDef, ImplDef, ProvenanceMap, Span, TraitDef, Ty};
+use crate::ty::{
+    AssocItem, FnDef, ForeignModuleDef, ImplDef, ProvenanceMap, Span, TraitDef, Ty,
+    serialize_index_impl,
+};
 use crate::unstable::Stable;
 
 pub mod abi;
@@ -46,31 +50,25 @@ pub mod compiler_interface;
 pub mod error;
 pub mod mir;
 pub mod target;
+#[cfg(test)]
+mod tests;
 pub mod ty;
 pub mod visitor;
 
 /// Use String for now but we should replace it.
 pub type Symbol = String;
 
 /// The number that identifies a crate.
-pub type CrateNum = usize;
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+pub struct CrateNum(pub(crate) usize, ThreadLocalIndex);
+serialize_index_impl!(CrateNum);
 
 impl Debug for DefId {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("DefId").field("id", &self.0).field("name", &self.name()).finish()
     }
 }
 
-impl IndexedVal for DefId {
-    fn to_val(index: usize) -> Self {
-        DefId(index)
-    }
-
-    fn to_index(&self) -> usize {
-        self.0
-    }
-}
-
 /// A list of crate items.
 pub type CrateItems = Vec<CrateItem>;
 
@@ -297,3 +295,25 @@ impl rustc_public_bridge::bridge::Allocation<compiler_interface::BridgeTys>
         }
     }
 }
+
+#[derive(Clone, Copy, Hash, PartialEq, Eq, Default)]
+/// Marker type for indexes into thread local structures.
+///
+/// Makes things `!Send`/`!Sync`, so users don't move `rustc_public` types to
+/// thread with no (or worse, different) `rustc_public` pointer.
+///
+/// Note. This doesn't make it impossible to confuse TLS. You could return a
+/// `DefId` from one `run!` invocation, and then use it inside a different
+/// `run!` invocation with different tables.
+pub(crate) struct ThreadLocalIndex {
+    _phantom: PhantomData<*const ()>,
+}
+#[expect(non_upper_case_globals)]
+/// Emulating unit struct `struct ThreadLocalIndex`;
+pub(crate) const ThreadLocalIndex: ThreadLocalIndex = ThreadLocalIndex { _phantom: PhantomData };
+
+impl fmt::Debug for ThreadLocalIndex {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_tuple("ThreadLocalIndex").finish()
+    }
+}

compiler/rustc_public/src/lib.rs

@@ -6,8 +6,8 @@ use serde::Serialize;
 
 use crate::mir::mono::{Instance, StaticDef};
 use crate::target::{Endian, MachineInfo};
-use crate::ty::{Allocation, Binder, ExistentialTraitRef, Ty};
-use crate::{Error, IndexedVal, with};
+use crate::ty::{Allocation, Binder, ExistentialTraitRef, Ty, index_impl};
+use crate::{Error, ThreadLocalIndex, with};
 
 /// An allocation in the rustc_public's IR global memory can be either a function pointer,
 /// a static, or a "real" allocation with some data in it.
@@ -47,17 +47,9 @@ impl GlobalAlloc {
 }
 
 /// A unique identification number for each provenance
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash, Serialize)]
-pub struct AllocId(usize);
-
-impl IndexedVal for AllocId {
-    fn to_val(index: usize) -> Self {
-        AllocId(index)
-    }
-    fn to_index(&self) -> usize {
-        self.0
-    }
-}
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
+pub struct AllocId(usize, ThreadLocalIndex);
+index_impl!(AllocId);
 
 /// Utility function used to read an allocation data into a unassigned integer.
 pub(crate) fn read_target_uint(mut bytes: &[u8]) -> Result<u128, Error> {

compiler/rustc_public/src/mir/alloc.rs

@@ -7,8 +7,8 @@ use serde::Serialize;
 use crate::abi::FnAbi;
 use crate::crate_def::CrateDef;
 use crate::mir::Body;
-use crate::ty::{Allocation, ClosureDef, ClosureKind, FnDef, GenericArgs, Ty};
-use crate::{CrateItem, DefId, Error, IndexedVal, ItemKind, Opaque, Symbol, with};
+use crate::ty::{Allocation, ClosureDef, ClosureKind, FnDef, GenericArgs, Ty, index_impl};
+use crate::{CrateItem, DefId, Error, ItemKind, Opaque, Symbol, ThreadLocalIndex, with};
 
 #[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize)]
 pub enum MonoItem {
@@ -241,8 +241,9 @@ impl From<StaticDef> for CrateItem {
     }
 }
 
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, Serialize)]
-pub struct InstanceDef(usize);
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
+pub struct InstanceDef(usize, ThreadLocalIndex);
+index_impl!(InstanceDef);
 
 impl CrateDef for InstanceDef {
     fn def_id(&self) -> DefId {
@@ -294,12 +295,3 @@ impl StaticDef {
         with(|cx| cx.eval_static_initializer(*self))
     }
 }
-
-impl IndexedVal for InstanceDef {
-    fn to_val(index: usize) -> Self {
-        InstanceDef(index)
-    }
-    fn to_index(&self) -> usize {
-        self.0
-    }
-}

compiler/rustc_public/src/mir/mono.rs

@@ -53,7 +53,7 @@ where
 }
 
 pub fn crate_num(item: &crate::Crate) -> CrateNum {
-    item.id.into()
+    item.id.0.into()
 }
 
 /// Loads the current context and calls a function with it.