bjoernager/rust
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make unevaluated const substs optional

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This commit is contained in:
lcnr 2021-03-16 00:05:45 +01:00
parent f4b606fd17
commit bfaf13af4e
46 changed files with 234 additions and 188 deletions
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5
compiler/rustc_ty_utils/src/instance.rs
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@ -54,8 +54,9 @@ impl<'tcx> BoundVarsCollector<'tcx> {
impl<'tcx> TypeVisitor<'tcx> for BoundVarsCollector<'tcx> {
type BreakTy = ();
fn tcx_for_anon_const_substs(&self) -> TyCtxt<'tcx> {
bug!("default anon const substs can't be bound vars");
fn tcx_for_anon_const_substs(&self) -> Option<TyCtxt<'tcx>> {
// Anon const substs do not contain bound vars by default.
None
}
fn visit_binder<T: TypeFoldable<'tcx>>(
&mut self,