| 1 | // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 |
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| 2 | // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out |
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| 3 | |
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| 4 | // XFAIL: target=mips{{.*}} |
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| 5 | |
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| 6 | #include <assert.h> |
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| 7 | #include <wchar.h> |
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| 8 | |
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| 9 | #include <sanitizer/msan_interface.h> |
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| 10 | |
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| 11 | int main() { |
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| 12 | const wchar_t *s = L"abc" ; |
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| 13 | assert(wcslen(s) == 3); |
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| 14 | |
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| 15 | wchar_t s2[5]; |
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| 16 | assert(wcsncpy(s2, s, 3) == s2); |
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| 17 | assert(__msan_test_shadow(&s2, 5 * sizeof(wchar_t)) == 3 * sizeof(wchar_t)); |
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| 18 | assert(wcsncpy(s2, s, 5) == s2); |
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| 19 | assert(__msan_test_shadow(&s2, 5 * sizeof(wchar_t)) == -1); |
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| 20 | |
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| 21 | wchar_t s3[5]; |
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| 22 | assert(wcsncpy(s3, s, 2) == s3); |
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| 23 | assert(__msan_test_shadow(&s3, 5 * sizeof(wchar_t)) == 2 * sizeof(wchar_t)); |
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| 24 | |
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| 25 | __msan_allocated_memory(data: &s2[1], size: sizeof(wchar_t)); |
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| 26 | wchar_t s4[5]; |
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| 27 | assert(wcsncpy(s4, s2, 3) == s4); |
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| 28 | __msan_check_mem_is_initialized(x: &s4, size: sizeof(s4)); |
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| 29 | } |
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| 30 | // CHECK: Uninitialized bytes in __msan_check_mem_is_initialized |
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| 31 | // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
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| 32 | // CHECK: in main {{.*}}wcsncpy.cpp:28 |
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| 33 | |
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| 34 | // CHECK: Uninitialized value was stored to memory at |
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| 35 | // CHECK: in {{[^\s]*}}wcsncpy |
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| 36 | // CHECK: in main {{.*}}wcsncpy.cpp:27 |
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| 37 | |
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| 38 | // CHECK: Memory was marked as uninitialized |
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| 39 | // CHECK: in __msan_allocated_memory |
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| 40 | // CHECK: in main {{.*}}wcsncpy.cpp:25 |
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| 41 | |
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