/* { dg-do run } */ /* { dg-options "-fsanitize=bounds" } */ struct S { unsigned long a[1]; int l; }; static inline unsigned long fn (const struct S *s, int i) { return s->a[i] / i; } int main () { struct S s; fn (&s, 1); } /* { dg-output "index 1 out of bounds for type 'long unsigned int \\\[1\\\]'" } */