[Msan] Fix the strerror_r unit test to build on FreeBSD

[kutuzov.viktor.84]

lib/msan/tests/msan_test.cc

572 ↗

(On Diff #18500)

FreeBSD implements the POSIX variant. The cast to size_t is to suppress the clang's warning on cast to a pointer from an integer of different size.

[eugenis]

LGTM

compiler-rt/trunk/lib/msan/tests/msan_test.cc

TEST(MemorySanitizer, strerror) {
   EXPECT_NOT_POISONED(strlen(buf));
   buf = strerror(123456);
   EXPECT_NOT_POISONED(strlen(buf));
 }
 
 TEST(MemorySanitizer, strerror_r) {
   errno = 0;
   char buf[1000];
-  char *res = strerror_r(EINVAL, buf, sizeof(buf));
+  char *res = (char*) (size_t) strerror_r(EINVAL, buf, sizeof(buf));
   ASSERT_EQ(0, errno);
   if (!res) res = buf; // POSIX version success.
   EXPECT_NOT_POISONED(strlen(res));
 }
 
 TEST(MemorySanitizer, fread) {
   char *x = new char[32];
   FILE *f = fopen(FILE_TO_READ, "r");