================
@@ -20,4 +20,7 @@ void vla(int n, ...)
__builtin_va_list ap;
void *p;
p = __builtin_va_arg(ap, typeof (int (*)[++n])); // CHECK: add nsw i32
{{.*}}, 1
+ // Don't crash on some undefined behaviors.
+ p = __builtin_va_arg(ap, typeof (int [++n])); // expected-warning{{second
argument to 'va_arg' is of variable length array type 'typeof(int[++n])'}}
----------------
efriedma-quic wrote:
Maybe put the warning checks into some test in clang/test/Sema.
https://github.com/llvm/llvm-project/pull/119563
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