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 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