bjoernager/rust
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Rollup merge of #122935 - RalfJung:with-exposed-provenance, r=Amanieu

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rename ptr::from_exposed_addr -> ptr::with_exposed_provenance

As discussed on [Zulip](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/To.20expose.20or.20not.20to.20expose/near/427757066).

The old name, `from_exposed_addr`, makes little sense as it's not the address that is exposed, it's the provenance. (`ptr.expose_addr()` stays unchanged as we haven't found a better option yet. The intended interpretation is "expose the provenance and return the address".)

The new name nicely matches `ptr::without_provenance`.
This commit is contained in:
Jacob Pratt 2024-04-02 20:37:39 -04:00 • committed by GitHub
commit e9ef8e1efa
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51 changed files with 120 additions and 113 deletions
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6
compiler/rustc_const_eval/src/interpret/cast.rs
View file

@ -40,9 +40,9 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
self.write_immediate(*res, dest)?;
}
CastKind::PointerFromExposedAddress => {
CastKind::PointerWithExposedProvenance => {
let src = self.read_immediate(src)?;
let res = self.pointer_from_exposed_address_cast(&src, cast_layout)?;
let res = self.pointer_with_exposed_provenance_cast(&src, cast_layout)?;
self.write_immediate(*res, dest)?;
}
@ -242,7 +242,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
Ok(ImmTy::from_scalar(self.cast_from_int_like(scalar, src.layout, cast_to.ty)?, cast_to))
}
pub fn pointer_from_exposed_address_cast(
pub fn pointer_with_exposed_provenance_cast(
&self,
src: &ImmTy<'tcx, M::Provenance>,
cast_to: TyAndLayout<'tcx>,

2
compiler/rustc_const_eval/src/transform/check_consts/check.rs
View file

@ -547,7 +547,7 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> {
Rvalue::Cast(CastKind::PointerExposeAddress, _, _) => {
self.check_op(ops::RawPtrToIntCast);
}
Rvalue::Cast(CastKind::PointerFromExposedAddress, _, _) => {
Rvalue::Cast(CastKind::PointerWithExposedProvenance, _, _) => {
// Since no pointer can ever get exposed (rejected above), this is easy to support.
}

2
compiler/rustc_const_eval/src/transform/validate.rs
View file

@ -1076,7 +1076,7 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
// FIXME(dyn-star): make sure nothing needs to be done here.
}
// FIXME: Add Checks for these
CastKind::PointerFromExposedAddress
CastKind::PointerWithExposedProvenance
| CastKind::PointerExposeAddress
| CastKind::PointerCoercion(_) => {}
CastKind::IntToInt | CastKind::IntToFloat => {