compiler-rt/test/msan/unpoison_string.cpp

   1 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t
   2 // RUN: %run %t
   3 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t
   4 // RUN: %run %t
   5
   6 #include <assert.h>
   7 #include <string.h>
   8 #include <sanitizer/msan_interface.h>
   9
  10 int main(int argc, char **argv) {
  11   char s[20] = "string";
  12   __msan_poison(s, sizeof(s));
  13   __msan_unpoison_string(s);
  14   assert(__msan_test_shadow(s, sizeof(s)) == strlen("string") + 1);
  15   return 0;
  16 }