| // Check that __asan_poison_memory_region works. |
| // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s |
| // |
| // Check that we can disable it |
| // RUN: %env_asan_opts=allow_user_poisoning=0 %run %t |
| |
| #include <stdlib.h> |
| |
| extern "C" void __asan_poison_memory_region(void *, size_t); |
| |
| int main(int argc, char **argv) { |
| char *x = new char[16]; |
| x[10] = 0; |
| __asan_poison_memory_region(x, 16); |
| int res = x[argc * 10]; // BOOOM |
| // CHECK: ERROR: AddressSanitizer: use-after-poison |
| // CHECK: main{{.*}}use-after-poison.cc:[[@LINE-2]] |
| delete [] x; |
| return res; |
| } |
