lint: do not warn unused parens around higher-ranked function pointers

Fixes #104397
2022-11-23 17:57:11 -07:00
parent 80b3c6dbde
commit 97d95d48e2
2 changed files with 19 additions and 0 deletions
--- a/compiler/rustc_lint/src/unused.rs
+++ b/compiler/rustc_lint/src/unused.rs
@@ -1002,6 +1002,7 @@ impl EarlyLintPass for UnusedParens {
        if let ast::TyKind::Paren(r) = &ty.kind {
            match &r.kind {
                ast::TyKind::TraitObject(..) => {}
+                ast::TyKind::BareFn(b) if b.generic_params.len() > 0 => {}
                ast::TyKind::ImplTrait(_, bounds) if bounds.len() > 1 => {}
                ast::TyKind::Array(_, len) => {
                    self.check_unused_delims_expr(