forked from OSchip/llvm-project
29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
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// RUN: %clangxx_msan %s -o %t && not %run %t 2>&1 | FileCheck --check-prefix=ON %s
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// RUN: %clangxx_msan %s -o %t && MSAN_OPTIONS=intercept_strndup=0 %run %t 2>&1 | FileCheck --check-prefix=OFF --allow-empty %s
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// When built as C on Linux, strndup is transformed to __strndup.
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// RUN: %clangxx_msan -O3 -xc %s -o %t && not %run %t 2>&1 | FileCheck --check-prefix=ON %s
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// UNSUPPORTED: windows-msvc
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sanitizer/msan_interface.h>
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int main(int argc, char **argv) {
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char kString[4] = "abc";
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__msan_poison(kString + 2, 1);
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char *copy = strndup(kString, 4); // BOOM
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assert(__msan_test_shadow(copy, 4) == 2); // Poisoning is preserved.
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free(copy);
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return 0;
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// ON: Uninitialized bytes in __interceptor_{{(__)?}}strndup at offset 2 inside [{{.*}}, 4)
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// ON: MemorySanitizer: use-of-uninitialized-value
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// ON: #0 {{.*}}main {{.*}}strndup.cpp:[[@LINE-6]]
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// ON-LABEL: SUMMARY
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// ON: {{.*}}strndup.cpp:[[@LINE-8]]
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// OFF-NOT: MemorySanitizer
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}
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