29 lines · cpp
1// RUN: %clangxx_asan -O0 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK2// RUN: %clangxx_asan -O1 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK3// RUN: %clangxx_asan -O2 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK4// RUN: %clangxx_asan -O3 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK5 6#include <stdio.h>7#include <wchar.h>8 9int main() {10 const wchar_t *start = L"X means ";11 const wchar_t *append = L"dog";12 wchar_t goodArray[12];13 wchar_t *volatile goodDst = goodArray;14 wcscpy(goodDst, start);15 wcscat(goodDst, append);16 17 wchar_t badArray[9];18 wchar_t *volatile badDst = badArray;19 wcscpy(badDst, start);20 fprintf(stderr, "Good so far.\n");21 // CHECK-DAG: Good so far.22 fflush(stderr);23 wcscat(badDst, append); // Boom!24 // CHECK-DAG: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}25 // CHECK-DAG: WRITE of size {{[0-9]+}} at [[ADDR]] thread T026 // CHECK-DAG: #0 {{0x[0-9a-f]+}} in wcscat27 printf("Should have failed with ASAN error.\n");28}29