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1// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&12// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out3 4// XFAIL: target=mips{{.*}}5 6#include <assert.h>7#include <wchar.h>8 9#include <sanitizer/msan_interface.h>10 11int main() {12  const wchar_t *s = L"abc";13  assert(wcslen(s) == 3);14 15  wchar_t s2[5];16  assert(wcsncpy(s2, s, 3) == s2);17  assert(__msan_test_shadow(&s2, 5 * sizeof(wchar_t)) == 3 * sizeof(wchar_t));18  assert(wcsncpy(s2, s, 5) == s2);19  assert(__msan_test_shadow(&s2, 5 * sizeof(wchar_t)) == -1);20 21  wchar_t s3[5];22  assert(wcsncpy(s3, s, 2) == s3);23  assert(__msan_test_shadow(&s3, 5 * sizeof(wchar_t)) == 2 * sizeof(wchar_t));24 25  __msan_allocated_memory(&s2[1], sizeof(wchar_t));26  wchar_t s4[5];27  assert(wcsncpy(s4, s2, 3) == s4);28  __msan_check_mem_is_initialized(&s4, sizeof(s4));29}30// CHECK:  Uninitialized bytes in __msan_check_mem_is_initialized31// CHECK:  WARNING: MemorySanitizer: use-of-uninitialized-value32// CHECK:    in main {{.*}}wcsncpy.cpp:2833 34// CHECK:  Uninitialized value was stored to memory at35// CHECK:    in {{[^\s]*}}wcsncpy36// CHECK:    in main {{.*}}wcsncpy.cpp:2737 38// CHECK:  Memory was marked as uninitialized39// CHECK:    in __msan_allocated_memory40// CHECK:    in main {{.*}}wcsncpy.cpp:2541