1 // Check that __asan_poison_memory_region works. 2 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s 3 // 4 // Check that we can disable it 5 // RUN: %env_asan_opts=allow_user_poisoning=0 %run %t 6 7 #include <stdlib.h> 8 9 extern "C" void __asan_poison_memory_region(void *, size_t); 10 11 int main(int argc, char **argv) { 12 char *x = new char[16]; 13 x[10] = 0; 14 __asan_poison_memory_region(x, 16); 15 int res = x[argc * 10]; // BOOOM 16 // CHECK: ERROR: AddressSanitizer: use-after-poison 17 // CHECK: main{{.*}}use-after-poison.cc:[[@LINE-2]] 18 delete [] x; 19 return res; 20 } 21
