bjoernager/rust
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use ocx type relation routines

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This commit is contained in:
lcnr 2022-11-15 14:05:30 +01:00
parent f5f67618e2
commit b2e6d08e3f
4 changed files with 28 additions and 20 deletions
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12
compiler/rustc_hir_analysis/src/check/compare_method.rs
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@ -402,10 +402,8 @@ pub fn collect_trait_impl_trait_tys<'tcx>(
unnormalized_trait_sig.inputs_and_output.iter().chain(trait_sig.inputs_and_output.iter()),
);
match infcx.at(&cause, param_env).eq(trait_return_ty, impl_return_ty) {
Ok(infer::InferOk { value: (), obligations }) => {
ocx.register_obligations(obligations);
}
match ocx.eq(&cause, param_env, trait_return_ty, impl_return_ty) {
Ok(()) => {}
Err(terr) => {
let mut diag = struct_span_err!(
tcx.sess,
@ -442,10 +440,8 @@ pub fn collect_trait_impl_trait_tys<'tcx>(
// the lifetimes of the return type, but do this after unifying just the
// return types, since we want to avoid duplicating errors from
// `compare_predicate_entailment`.
match infcx.at(&cause, param_env).eq(trait_fty, impl_fty) {
Ok(infer::InferOk { value: (), obligations }) => {
ocx.register_obligations(obligations);
}
match ocx.eq(&cause, param_env, trait_fty, impl_fty) {
Ok(()) => {}
Err(terr) => {
// This function gets called during `compare_predicate_entailment` when normalizing a
// signature that contains RPITIT. When the method signatures don't match, we have to