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      1 // RUN: %clang_msan -std=c99 -O0 -g %s -o %t && %run %t
      2 
      3 // strerror_r under a weird set of circumstances can be redirected to
      4 // __xpg_strerror_r. Test that MSan handles this correctly.
      5 
      6 #define _POSIX_C_SOURCE 200112
      7 #include <assert.h>
      8 #include <stdio.h>
      9 #include <string.h>
     10 #include <errno.h>
     11 
     12 int main() {
     13   char buf[1000];
     14   int res = strerror_r(EINVAL, buf, sizeof(buf));
     15   assert(!res);
     16   volatile int z = strlen(buf);
     17   return 0;
     18 }
     19