19 lines · cpp
1// RUN: %clangxx_msan -O0 -g %s -o %t2// RUN: not %run %t 2>&1 | FileCheck %s3// RUN: env MSAN_OPTIONS=intercept_memcmp=0 %run %t4 5#include <string.h>6#include <stdio.h>7int main(int argc, char **argv) {8 char a1[4];9 char a2[4];10 for (int i = 0; i < argc * 3; i++)11 a2[i] = a1[i] = i;12 int res = memcmp(a1, a2, 4);13 if (!res)14 printf("equals");15 return 0;16 // CHECK: Uninitialized bytes in MemcmpInterceptorCommon at offset 317 // CHECK: MemorySanitizer: use-of-uninitialized-value18}19