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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
// XFAIL: mips
#include <assert.h>
#include <wchar.h>
#include <sanitizer/msan_interface.h>
int main() {
const wchar_t *s = L"abc";
assert(wcslen(s) == 3);
wchar_t s2[5];
assert(wcsncpy(s2, s, 3) == s2);
assert(__msan_test_shadow(&s2, 5 * sizeof(wchar_t)) == 3 * sizeof(wchar_t));
assert(wcsncpy(s2, s, 5) == s2);
assert(__msan_test_shadow(&s2, 5 * sizeof(wchar_t)) == -1);
wchar_t s3[5];
assert(wcsncpy(s3, s, 2) == s3);
assert(__msan_test_shadow(&s3, 5 * sizeof(wchar_t)) == 2 * sizeof(wchar_t));
__msan_allocated_memory(&s2[1], sizeof(wchar_t));
wchar_t s4[5];
assert(wcsncpy(s4, s2, 3) == s4);
__msan_check_mem_is_initialized(&s4, sizeof(s4));
}
// CHECK: Uninitialized bytes in __msan_check_mem_is_initialized
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK: in main {{.*}}wcsncpy.cc:28
// CHECK: Uninitialized value was stored to memory at
// CHECK: in {{[^\s]*}}wcsncpy
// CHECK: in main {{.*}}wcsncpy.cc:27
// CHECK: Memory was marked as uninitialized
// CHECK: in __msan_allocated_memory
// CHECK: in main {{.*}}wcsncpy.cc:25
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