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Change wording of missing return type suggestion

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This commit is contained in:
Esteban Kuber 2021-12-15 23:49:03 +00:00
parent b09420f95a
commit 1db02b8a43
6 changed files with 28 additions and 16 deletions
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11
compiler/rustc_typeck/src/check/fn_ctxt/suggestions.rs
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@ -530,13 +530,20 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
err.span_suggestion(
span,
"try adding a return type",
format!("-> {} ", self.resolve_vars_with_obligations(found)),
format!("-> {} ", found),
Applicability::MachineApplicable,
);
true
}
(&hir::FnRetTy::DefaultReturn(span), false, true, true) => {
err.span_label(span, "possibly return type missing here?");
// FIXME: if `found` could be `impl Iterator` or `impl Fn*`, we should suggest
// that.
err.span_suggestion(
span,
"a return type might be missing here",
"-> _ ".to_string(),
Applicability::HasPlaceholders,
);
true
}
(&hir::FnRetTy::DefaultReturn(span), _, false, true) => {