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Classify closure arguments in refutable pattern in argument error

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Deadbeef 2024-01-26 23:53:51 +08:00
parent 1fc46f3a8f
commit e17f91dd8b
3 changed files with 12 additions and 3 deletions
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11
compiler/rustc_mir_build/src/thir/pattern/check_match.rs
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@ -47,9 +47,18 @@ pub(crate) fn check_match(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Result<(), Err
};
visitor.visit_expr(&thir[expr]);
let origin = match tcx.def_kind(def_id) {
DefKind::AssocFn | DefKind::Fn => "function argument",
DefKind::Closure => "closure argument",
// other types of MIR don't have function parameters, and we don't need to
// categorize those for the irrefutable check.
_ if thir.params.is_empty() => "",
kind => bug!("unexpected function parameters in THIR: {kind:?} {def_id:?}"),
};
for param in thir.params.iter() {
if let Some(box ref pattern) = param.pat {
visitor.check_binding_is_irrefutable(pattern, "function argument", None, None);
visitor.check_binding_is_irrefutable(pattern, origin, None, None);
}
}
visitor.error