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Directly check provenance from the AllocId.

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This commit is contained in:
Camille GILLOT 2023-10-23 19:37:01 +00:00
parent 72f0e0e795
commit 856161886a
1 changed files with 1 additions and 1 deletions
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2
compiler/rustc_mir_transform/src/gvn.rs
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@ -940,7 +940,7 @@ fn op_to_prop_const<'tcx>(
// Check that we do not leak a pointer. // Check that we do not leak a pointer.
// Those pointers may lose part of their identity in codegen. // Those pointers may lose part of their identity in codegen.
// See https://github.com/rust-lang/rust/issues/79738. // See https://github.com/rust-lang/rust/issues/79738.
if !value.may_have_provenance(*ecx.tcx, op.layout.size) { if ecx.tcx.global_alloc(alloc_id).unwrap_memory().inner().provenance().ptrs().is_empty() {
return Some(value); return Some(value);
} }