bjoernager/rust
bjoernager/rust
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reword default binding mode notes

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This commit is contained in:
dianne 2025-02-05 09:05:39 -08:00
parent 767f82039c
commit a5cc4cbe64
5 changed files with 85 additions and 91 deletions
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12
compiler/rustc_mir_build/src/errors.rs
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@ -1128,15 +1128,9 @@ impl Subdiagnostic for Rust2024IncompatiblePatSugg {
for (span, def_br_mutbl) in self.default_mode_labels.into_iter().rev() {
// Don't point to a macro call site.
if !span.from_expansion() {
let dbm_str = match def_br_mutbl {
ty::Mutability::Not => "ref",
ty::Mutability::Mut => "ref mut",
};
let note_msg = format!(
"the default binding mode changed to `{dbm_str}` because this has type `{}_`",
def_br_mutbl.ref_prefix_str()
);
let label_msg = format!("the default binding mode is `{dbm_str}`, introduced here");
let note_msg = "matching on a reference type with a non-reference pattern changes the default binding mode";
let label_msg =
format!("this matches on type `{}_`", def_br_mutbl.ref_prefix_str());
let mut label = MultiSpan::from(span);
label.push_span_label(span, label_msg);
diag.span_note(label, note_msg);