================
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -verify=expected,pedantic -std=c++11
-pedantic %s
+// RUN: %clang_cc1 -fsyntax-only -verify -x c -std=c23 %s
+// RUN: %clang_cc1 -fsyntax-only -verify=expected,pedantic -x c -std=c23
-pedantic %s
+
+void test() {
+ [[X1(])]]; // expected-warning {{unknown attribute 'X1' ignored}}
pedantic-warning {{attribute argument list is not a balanced token sequence}}
+ [[X1(})]]; // expected-warning {{unknown attribute 'X1' ignored}}
pedantic-warning {{attribute argument list is not a balanced token sequence}}
----------------
AaronBallman wrote:
Some additional tests to consider:
```
[[X1())]];
[[X1([)]];
[[X1({)]];
[[X1(()]];
[[X1([[[[[]]]])]];
```
https://github.com/llvm/llvm-project/pull/220259
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