1 files changed, 26 insertions, 0 deletions
diff --git a/src/test/ui/lint/unused_parens_json_suggestion.fixed b/src/test/ui/lint/unused_parens_json_suggestion.fixed
new file mode 100644
index 000000000..c40045404
--- /dev/null
+++ b/src/test/ui/lint/unused_parens_json_suggestion.fixed
@@ -0,0 +1,26 @@
+// compile-flags: --error-format json
+// run-rustfix
+
+// The output for humans should just highlight the whole span without showing
+// the suggested replacement, but we also want to test that suggested
+// replacement only removes one set of parentheses, rather than naïvely
+// stripping away any starting or ending parenthesis characters—hence this
+// test of the JSON error format.
+
+#![deny(unused_parens)]
+#![allow(unreachable_code)]
+
+fn main() {
+    // We want to suggest the properly-balanced expression `1 / (2 + 3)`, not
+    // the malformed `1 / (2 + 3`
+    let _a = 1 / (2 + 3); //~ERROR unnecessary parentheses
+    f();
+}
+
+fn f() -> bool {
+    loop {
+        if (break { return true }) {
+        }
+    }
+    false
+}