1673dc3d4SNico Weber // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t
2673dc3d4SNico Weber // RUN: not %run %t 2>&1 | FileCheck %s
3673dc3d4SNico Weber //
4673dc3d4SNico Weber // REQUIRES: stable-runtime
5673dc3d4SNico Weber 
6673dc3d4SNico Weber #include <assert.h>
7673dc3d4SNico Weber #include <stdint.h>
8673dc3d4SNico Weber 
foo(int index,int len)9673dc3d4SNico Weber __attribute__((noinline)) void foo(int index, int len) {
10673dc3d4SNico Weber   if (index > len) {
11*44c83eccSVitaly Buka     char str[len];
12673dc3d4SNico Weber     assert(!(reinterpret_cast<uintptr_t>(str) & 31L));
13673dc3d4SNico Weber     str[index] = '1'; // BOOM
14673dc3d4SNico Weber // CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
15673dc3d4SNico Weber // CHECK: WRITE of size 1 at [[ADDR]] thread T0
16673dc3d4SNico Weber   }
17673dc3d4SNico Weber }
18673dc3d4SNico Weber 
main(int argc,char ** argv)19673dc3d4SNico Weber int main(int argc, char **argv) {
20673dc3d4SNico Weber   foo(33, 10);
21673dc3d4SNico Weber   return 0;
22673dc3d4SNico Weber }
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