1// RUN: %clang_msan %s -o %t
2// RUN: MSAN_OPTIONS=intercept_strcmp=false %run %t 2>&1
3// RUN: MSAN_OPTIONS=intercept_strcmp=true not %run %t 2>&1 | FileCheck %s
4// RUN: not %run %t 2>&1 | FileCheck %s
5
6#include <assert.h>
7#include <stdlib.h>
8#include <string.h>
9
10int main(int argc, char **argv) {
11 char undef;
12 char s1[] = "abcd";
13 char s2[] = "1234";
14 assert(strcmp(s1, s2) > 0);
15 s2[0] = undef;
16 assert(strcmp(s1, s2));
17
18 // CHECK: {{.*WARNING: MemorySanitizer: use-of-uninitialized-value}}
19 return 0;
20}
21

source code of compiler-rt/test/msan/strcmp.c