bjoernager/rust
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add new rval, pull deref early

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This commit is contained in:
ouz-a 2022-06-13 16:37:41 +03:00
parent b3f4c31199
commit cb0017f2f8
41 changed files with 274 additions and 103 deletions
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11
compiler/rustc_const_eval/src/transform/validate.rs
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@ -382,7 +382,7 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
};
}
match rvalue {
Rvalue::Use(_) => {}
Rvalue::Use(_) | Rvalue::CopyForDeref(_) => {}
Rvalue::Aggregate(agg_kind, _) => {
let disallowed = match **agg_kind {
AggregateKind::Array(..) => false,
@ -592,6 +592,15 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
),
);
}
if let Rvalue::CopyForDeref(place) = rvalue {
if !place.ty(&self.body.local_decls, self.tcx).ty.builtin_deref(true).is_some()
{
self.fail(
location,
"`CopyForDeref` should only be used for dereferenceable types",
)
}
}
// FIXME(JakobDegen): Check this for all rvalues, not just this one.
if let Rvalue::Use(Operand::Copy(src) | Operand::Move(src)) = rvalue {
// The sides of an assignment must not alias. Currently this just checks whether