compiler-rt/test/msan/strcmp.c

   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
  10 int 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 }