Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

silence mismatched types errors for implied projections #121863

Merged
merged 6 commits into from
Mar 7, 2024
Merged

silence mismatched types errors for implied projections #121863

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
6fa58be
add test for assoc type mismatch in supertrait
Feb 29, 2024
189e784
adjust obligation spans for super projections
Feb 8, 2024
443c816
rename `ast_*` to `hir_*` in wfcheck
Mar 1, 2024
aa55f6d
suppress fulfillment errors for super projections
Mar 1, 2024
6bd970d
address review feedback
Mar 4, 2024
db48b93
improve debug logging
Mar 7, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion compiler/rustc_infer/src/infer/relate/higher_ranked.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -77,7 +77,7 @@ impl<'tcx> InferCtxt<'tcx> {
// that name placeholders created in this function. Nested goals from type relations can
// also contain placeholders created by this function.
let value = self.enter_forall_and_leak_universe(forall);
debug!("?value");
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

😁

debug!(?value);
f(value)
}

Expand Down
17 changes: 3 additions & 14 deletions compiler/rustc_trait_selection/src/traits/error_reporting/type_err_ctxt_ext.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1419,6 +1419,7 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {

// returns if `cond` not occurring implies that `error` does not occur - i.e., that
// `error` occurring implies that `cond` occurs.
#[instrument(level = "debug", skip(self), ret)]
fn error_implies(&self, cond: ty::Predicate<'tcx>, error: ty::Predicate<'tcx>) -> bool {
if cond == error {
return true;
Expand All @@ -1428,25 +1429,13 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
self.enter_forall(error, |error| {
elaborate(self.tcx, std::iter::once(cond))
.filter_map(|implied| implied.to_opt_poly_trait_pred())
.any(|implied| {
let is_implied = self.can_match_trait(error, implied);
if is_implied {
debug!("error_implies: {:?} -> {:?} -> {:?}", cond, error, implied);
}
is_implied
})
.any(|implied| self.can_match_trait(error, implied))
})
} else if let Some(error) = error.to_opt_poly_projection_pred() {
self.enter_forall(error, |error| {
elaborate(self.tcx, std::iter::once(cond))
.filter_map(|implied| implied.to_opt_poly_projection_pred())
.any(|implied| {
let is_implied = self.can_match_projection(error, implied);
if is_implied {
debug!("error_implies: {:?} -> {:?} -> {:?}", cond, error, implied);
}
is_implied
})
.any(|implied| self.can_match_projection(error, implied))
})
} else {
false
Expand Down
Loading