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UnsafeCell now has no niches, ever.

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This commit is contained in:
Oli Scherer 2022-07-07 10:46:22 +00:00
parent e78e747f53
commit 2a899dc1cf
22 changed files with 73 additions and 512 deletions
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2
compiler/rustc_const_eval/src/interpret/validity.rs
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@ -821,7 +821,7 @@ impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValueVisitor<'mir, 'tcx, M>
// Special check preventing `UnsafeCell` in the inner part of constants
if let Some(def) = op.layout.ty.ty_adt_def() {
if matches!(self.ctfe_mode, Some(CtfeValidationMode::Const { inner: true, .. }))
&& Some(def.did()) == self.ecx.tcx.lang_items().unsafe_cell_type()
&& def.is_unsafe_cell()
{
throw_validation_failure!(self.path, { "`UnsafeCell` in a `const`" });
}