1*d21b3d34SFangrui Song // RUN: %clangxx_msan -O0 -g %s -o %t && not %run %t
2*d21b3d34SFangrui Song
3*d21b3d34SFangrui Song #include <assert.h>
4*d21b3d34SFangrui Song #include <locale.h>
5*d21b3d34SFangrui Song #include <sanitizer/msan_interface.h>
6*d21b3d34SFangrui Song #include <stdlib.h>
7*d21b3d34SFangrui Song #include <wchar.h>
8*d21b3d34SFangrui Song
main(void)9*d21b3d34SFangrui Song int main(void) {
10*d21b3d34SFangrui Song wchar_t q[10];
11*d21b3d34SFangrui Song size_t n = wcsxfrm(q, L"abcdef", sizeof(q) / sizeof(wchar_t));
12*d21b3d34SFangrui Song assert(n < sizeof(q));
13*d21b3d34SFangrui Song __msan_check_mem_is_initialized(q, (n + 1) * sizeof(wchar_t));
14*d21b3d34SFangrui Song
15*d21b3d34SFangrui Song locale_t loc = newlocale(LC_ALL_MASK, "", (locale_t)0);
16*d21b3d34SFangrui Song
17*d21b3d34SFangrui Song __msan_poison(&q, sizeof(q));
18*d21b3d34SFangrui Song n = wcsxfrm_l(q, L"qwerty", sizeof(q) / sizeof(wchar_t), loc);
19*d21b3d34SFangrui Song assert(n < sizeof(q));
20*d21b3d34SFangrui Song __msan_check_mem_is_initialized(q, (n + 1) * sizeof(wchar_t));
21*d21b3d34SFangrui Song
22*d21b3d34SFangrui Song q[0] = 'A';
23*d21b3d34SFangrui Song q[1] = '\x00';
24*d21b3d34SFangrui Song __msan_poison(&q, sizeof(q));
25*d21b3d34SFangrui Song wcsxfrm(NULL, q, 0);
26*d21b3d34SFangrui Song
27*d21b3d34SFangrui Song // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
28*d21b3d34SFangrui Song // CHECK: in main {{.*}}wcsxfrm.cpp:25
29*d21b3d34SFangrui Song return 0;
30*d21b3d34SFangrui Song }
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