1 // RUN: %clangxx_msan -O0 -g %s -o %t && not %run %t
2
3 #include <assert.h>
4 #include <locale.h>
5 #include <sanitizer/msan_interface.h>
6 #include <stdlib.h>
7 #include <wchar.h>
8
main(void)9 int 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-value
28 // CHECK: in main {{.*}}wcsxfrm.cpp:25
29 return 0;
30 }
31