1// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-allocas %s -o %t
2// RUN: not %run %t 2>&1 | FileCheck %s
3//
4
5#include <assert.h>
6
7__attribute__((noinline)) void foo(int index, int len) {
8  volatile char str[len] __attribute__((aligned(32)));
9  assert(!(reinterpret_cast<long>(str) & 31L));
10  str[index] = '1'; // BOOM
11// CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
12// CHECK: WRITE of size 1 at [[ADDR]] thread T0
13}
14
15int main(int argc, char **argv) {
16  foo(10, 10);
17  return 0;
18}
19