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Rollup merge of #114931 - Urgau:revert-114052, r=compiler-errors

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Revert PR #114052 to fix invalid suggestion

This PR reverts https://github.com/rust-lang/rust/pull/114052 to fix the invalid suggestion produced by the PR.

Unfortunately the invalid suggestion cannot be improved from the current position where it's emitted since we lack enough information (is an assignment?, left or right?, ...) to be able to fix it here. Furthermore the previous wasn't wrong, just suboptimal, contrary to the current one which is just wrong.

Added a regression test and commented out some code instead of removing it so we can use it later.

Reopens https://github.com/rust-lang/rust/issues/114050
Fixes https://github.com/rust-lang/rust/issues/114925
This commit is contained in:
Josh Stone 2023-08-17 15:40:09 -07:00 • committed by GitHub
commit 5861815559
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9 changed files with 73 additions and 61 deletions
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2
compiler/rustc_hir_typeck/src/demand.rs
View file

@ -53,7 +53,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
|| self.suggest_no_capture_closure(err, expected, expr_ty)
|| self.suggest_boxing_when_appropriate(err, expr.span, expr.hir_id, expected, expr_ty)
|| self.suggest_block_to_brackets_peeling_refs(err, expr, expr_ty, expected)
|| self.suggest_copied_cloned_or_as_ref(err, expr, expr_ty, expected, expected_ty_expr)
|| self.suggest_copied_cloned_or_as_ref(err, expr, expr_ty, expected)
|| self.suggest_clone_for_ref(err, expr, expr_ty, expected)
|| self.suggest_into(err, expr, expr_ty, expected)
|| self.suggest_floating_point_literal(err, expr, expected)

29
compiler/rustc_hir_typeck/src/errors.rs
View file

@ -253,7 +253,7 @@ impl HelpUseLatestEdition {
}
#[derive(Subdiagnostic)]
pub enum OptionResultRefMismatch<'tcx> {
pub enum OptionResultRefMismatch {
#[suggestion(
hir_typeck_option_result_copied,
code = ".copied()",
@ -276,19 +276,20 @@ pub enum OptionResultRefMismatch<'tcx> {
span: Span,
def_path: String,
},
#[suggestion(
hir_typeck_option_result_asref,
code = ".as_ref()",
style = "verbose",
applicability = "machine-applicable"
)]
AsRef {
#[primary_span]
span: Span,
def_path: String,
expected_ty: Ty<'tcx>,
expr_ty: Ty<'tcx>,
},
// FIXME: #114050
// #[suggestion(
// hir_typeck_option_result_asref,
// code = ".as_ref()",
// style = "verbose",
// applicability = "machine-applicable"
// )]
// AsRef {
// #[primary_span]
// span: Span,
// def_path: String,
// expected_ty: Ty<'tcx>,
// expr_ty: Ty<'tcx>,
// },
}
#[derive(Diagnostic)]

11
compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
View file

@ -1097,7 +1097,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
expr: &hir::Expr<'_>,
expr_ty: Ty<'tcx>,
expected_ty: Ty<'tcx>,
expected_ty_expr: Option<&'tcx hir::Expr<'tcx>>,
) -> bool {
let ty::Adt(adt_def, args) = expr_ty.kind() else {
return false;
@ -1115,7 +1114,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
{
let expr_inner_ty = args.type_at(0);
let expected_inner_ty = expected_args.type_at(0);
if let &ty::Ref(_, ty, mutability) = expr_inner_ty.kind()
if let &ty::Ref(_, ty, _mutability) = expr_inner_ty.kind()
&& self.can_eq(self.param_env, ty, expected_inner_ty)
{
let def_path = self.tcx.def_path_str(adt_def.did());
@ -1124,14 +1123,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
errors::OptionResultRefMismatch::Copied {
span, def_path
}
} else if let Some(expected_ty_expr) = expected_ty_expr
// FIXME: suggest changes to both expressions to convert both to
// Option/Result<&T>
&& mutability.is_not()
{
errors::OptionResultRefMismatch::AsRef {
span: expected_ty_expr.span.shrink_to_hi(), expected_ty, expr_ty, def_path
}
} else if let Some(clone_did) = self.tcx.lang_items().clone_trait()
&& rustc_trait_selection::traits::type_known_to_meet_bound_modulo_regions(
self,