| // RUN: %clangxx_msan -O0 -g %s -o %t | |
| // RUN: not %run %t 2>&1 | FileCheck %s | |
| // RUN: MSAN_OPTIONS=intercept_memcmp=0 %run %t | |
| #include <string.h> | |
| #include <stdio.h> | |
| int main(int argc, char **argv) { | |
| char a1[4]; | |
| char a2[4]; | |
| for (int i = 0; i < argc * 3; i++) | |
| a2[i] = a1[i] = i; | |
| int res = memcmp(a1, a2, 4); | |
| if (!res) | |
| printf("equals"); | |
| return 0; | |
| // CHECK: Uninitialized bytes in __interceptor_memcmp at offset 3 | |
| // CHECK: MemorySanitizer: use-of-uninitialized-value | |
| } |