alloca_safe_access.cc revision 86277eb844c4983c81de62d7c050e92fe7155788 
1// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-allocas %s -o %t
2// RUN: %run %t 2>&1
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';
11}
12
13int main(int argc, char **argv) {
14  foo(4, 5);
15  foo(39, 40);
16  return 0;
17}
18