derek.holloway
7502bf64a4
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27 lines
1.2 KiB
C++
27 lines
1.2 KiB
C++
// RUN: %clangxx_asan -O0 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
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// RUN: %clangxx_asan -O1 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
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// RUN: %clangxx_asan -O2 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
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// RUN: %clangxx_asan -O3 %s -o %t && not %env_asan_opts=log_to_stderr=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK
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#include <stdio.h>
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#include <wchar.h>
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int main() {
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const wchar_t *src = L"X means dog";
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wchar_t goodArray[12];
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wchar_t *volatile goodDst = goodArray;
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wcsncpy(goodDst, src, 12);
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wchar_t badArray[7];
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wchar_t *volatile badDst = badArray;
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wcsncpy(badDst, src, 7); // This should still work.
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fprintf(stderr, "Good so far.\n");
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// CHECK-DAG: Good so far.
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fflush(stderr);
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wcsncpy(badDst, src, 15); // Boom!
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// CHECK-DAG: ERROR: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] at pc {{0x[0-9a-f]+}} bp {{0x[0-9a-f]+}} sp {{0x[0-9a-f]+}}
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// CHECK-DAG: WRITE of size {{[0-9]+}} at [[ADDR]] thread T0
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// CHECK-DAG: #0 {{0x[0-9a-f]+}} in wcsncpy
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printf("Should have failed with ASAN error.\n");
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}
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