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Manually register some bounds for a better span

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This commit is contained in:
Michael Goulet 2024-11-08 04:27:20 +00:00
parent e4c1a0016c
commit 97dfe8b871
14 changed files with 156 additions and 14 deletions
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16
compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs
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@ -2953,6 +2953,22 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
// We hold the `DefId` of the item introducing the obligation, but displaying it
// doesn't add user usable information. It always point at an associated item.
}
ObligationCauseCode::OpaqueTypeBound(span, definition_def_id) => {
err.span_note(span, "required by a bound in an opaque type");
if let Some(definition_def_id) = definition_def_id
// If there are any stalled coroutine obligations, then this
// error may be due to that, and not because the body has more
// where-clauses.
&& self.tcx.typeck(definition_def_id).coroutine_stalled_predicates.is_empty()
{
// FIXME(compiler-errors): We could probably point to something
// specific here if we tried hard enough...
err.span_note(
tcx.def_span(definition_def_id),
"this definition site has more where clauses than the opaque type",
);
}
}
ObligationCauseCode::Coercion { source, target } => {
let source =
tcx.short_ty_string(self.resolve_vars_if_possible(source), long_ty_file);