| 1 | // RUN: %clangxx_msan -O0 -g %s -o %t |
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| 2 | // RUN: not %run %t 2>&1 | FileCheck %s |
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| 3 | // RUN: env MSAN_OPTIONS=intercept_memcmp=0 %run %t |
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| 4 | |
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| 5 | #include <string.h> |
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| 6 | #include <stdio.h> |
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| 7 | int main(int argc, char **argv) { |
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| 8 | char a1[4]; |
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| 9 | char a2[4]; |
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| 10 | for (int i = 0; i < argc * 3; i++) |
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| 11 | a2[i] = a1[i] = i; |
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| 12 | int res = memcmp(s1: a1, s2: a2, n: 4); |
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| 13 | if (!res) |
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| 14 | printf(format: "equals" ); |
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| 15 | return 0; |
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| 16 | // CHECK: Uninitialized bytes in MemcmpInterceptorCommon at offset 3 |
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| 17 | // CHECK: MemorySanitizer: use-of-uninitialized-value |
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| 18 | } |
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| 19 | |
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