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Fix the issue of invalid suggestion for a reference of iterator

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This commit is contained in:
yukang 2024-07-16 22:00:04 +08:00
parent 077d0da30a
commit 48ddf5e323
2 changed files with 3 additions and 9 deletions
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4
compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs
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@ -466,7 +466,6 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
&& let Some(arg_ty) = typeck_results.expr_ty_adjusted_opt(expr)
{
// Suggest dereferencing the argument to a function/method call if possible
let mut real_trait_pred = trait_pred;
while let Some((parent_code, parent_trait_pred)) = code.parent() {
code = parent_code;
@ -553,6 +552,9 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
);
if self.predicate_may_hold(&obligation)
&& self.predicate_must_hold_modulo_regions(&sized_obligation)
// Do not suggest * if it is already a reference,
// will suggest removing the borrow instead in that case.
&& !matches!(expr.kind, hir::ExprKind::AddrOf(..))
{
let call_node = self.tcx.hir_node(*call_hir_id);
let msg = "consider dereferencing here";