17 lines · cpp
1// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&12// FileCheck %s <%t.out3// RUN: %clangxx_msan -O0 %s -o %t && env MSAN_OPTIONS=poison_in_free=0 %run %t >%t.out 2>&14 5#include <stdio.h>6#include <stdlib.h>7#include <string.h>8 9int main(int argc, char **argv) {10 char *volatile x = (char*)malloc(50 * sizeof(char));11 memset(x, 0, 50);12 free(x);13 return x[25];14 // CHECK: MemorySanitizer: use-of-uninitialized-value15 // CHECK: #0 {{.*}} in main{{.*}}poison_in_free.cpp:[[@LINE-2]]16}17