21 lines · cpp
1// Check that __asan_poison_memory_region works.2// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s3//4// Check that we can disable it5// RUN: %env_asan_opts=allow_user_poisoning=0 %run %t6 7#include <stdlib.h>8 9extern "C" void __asan_poison_memory_region(void *, size_t);10 11int 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]; // BOOOM16 // CHECK: ERROR: AddressSanitizer: use-after-poison17 // CHECK: main{{.*}}use-after-poison.cpp:[[@LINE-2]]18 delete [] x;19 return res;20}21