1  /* { dg-do compile } */
       2  /* { dg-options "-fno-sanitize=address -fsanitize=kernel-address -fdump-tree-sanopt" } */
       3  /* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
       4  
       5  void foo(int index, int len) {
       6    char str[len];
       7    str[index] = '1'; // BOOM
       8  }
       9  
      10  /* { dg-final { scan-tree-dump-not "__builtin___asan_alloca_poison" "sanopt" } } */
      11  /* { dg-final { scan-tree-dump-not "__builtin___asan_allocas_unpoison" "sanopt" } } */