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allow ReError in CanonicalUserTypeAnnotation

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This commit is contained in:
Ali MJ Al-Nasrawy 2023-03-15 15:51:34 +03:00
parent 82bfda848e
commit a42cbdb165
3 changed files with 42 additions and 2 deletions
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4
compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
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@ -230,9 +230,9 @@ impl CanonicalizeMode for CanonicalizeUserTypeAnnotation {
r: ty::Region<'tcx>,
) -> ty::Region<'tcx> {
match *r {
ty::ReEarlyBound(_) | ty::ReFree(_) | ty::ReErased | ty::ReStatic => r,
ty::ReEarlyBound(_) | ty::ReFree(_) | ty::ReErased | ty::ReStatic | ty::ReError(_) => r,
ty::ReVar(_) => canonicalizer.canonical_var_for_region_in_root_universe(r),
_ => {
ty::RePlaceholder(..) | ty::ReLateBound(..) => {
// We only expect region names that the user can type.
bug!("unexpected region in query response: `{:?}`", r)
}