gcc/testsuite/c-c++-common/asan/alloca_instruments_all_paddings.c

/* { dg-do run } */

#include "sanitizer/asan_interface.h"
#include <assert.h>

__attribute__((noinline)) void foo(int index, int len) {
  volatile char str[len] __attribute__((aligned(32)));
  assert(!((long) str & 31L));
  char *q = (char *)__asan_region_is_poisoned((char *)str, 64);
  assert(q && ((q - str) == index));
}

int main(int argc, char **argv) {
  for (int i = 1; i < 33; ++i)
    foo(i, i);

  for (int i = 1; i < 33; ++i)
    foo(i, i);

  return 0;
}