31 lines · cpp
1// RUN: %clangxx_msan -O0 -g %s -o %t && not %run %t2 3#include <assert.h>4#include <locale.h>5#include <sanitizer/msan_interface.h>6#include <stdlib.h>7#include <wchar.h>8 9int main(void) {10 wchar_t q[10];11 size_t n = wcsxfrm(q, L"abcdef", sizeof(q) / sizeof(wchar_t));12 assert(n < sizeof(q));13 __msan_check_mem_is_initialized(q, (n + 1) * sizeof(wchar_t));14 15 locale_t loc = newlocale(LC_ALL_MASK, "", (locale_t)0);16 17 __msan_poison(&q, sizeof(q));18 n = wcsxfrm_l(q, L"qwerty", sizeof(q) / sizeof(wchar_t), loc);19 assert(n < sizeof(q));20 __msan_check_mem_is_initialized(q, (n + 1) * sizeof(wchar_t));21 22 q[0] = 'A';23 q[1] = '\x00';24 __msan_poison(&q, sizeof(q));25 wcsxfrm(NULL, q, 0);26 27 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value28 // CHECK: in main {{.*}}wcsxfrm.cpp:2529 return 0;30}31