bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Split out make_ambiguous_response_no_constraints

Browse source
This commit is contained in:
Michael Goulet 2023-04-26 22:33:33 +00:00
parent 5fa82092ae
commit ee8942138a
2 changed files with 52 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

20
compiler/rustc_trait_selection/src/solve/mod.rs
View file

@ -340,17 +340,17 @@ impl<'tcx> EvalCtxt<'_, 'tcx> {
if responses.is_empty() {
return Err(NoSolution);
}
let certainty = responses.iter().fold(Certainty::AMBIGUOUS, |certainty, response| {
certainty.unify_with(response.value.certainty)
});
let response = self.evaluate_added_goals_and_make_canonical_response(certainty);
if let Ok(response) = response {
assert!(response.has_no_inference_or_external_constraints());
Ok(response)
} else {
bug!("failed to make floundered response: {responses:?}");
}
let Certainty::Maybe(maybe_cause) = responses.iter().fold(
Certainty::AMBIGUOUS,
|certainty, response| {
certainty.unify_with(response.value.certainty)
},
) else {
bug!("expected flounder response to be ambiguous")
};
Ok(self.make_ambiguous_response_no_constraints(maybe_cause))
}
}