Index: lib/msan/tests/msan_test.cc
===================================================================
--- lib/msan/tests/msan_test.cc
+++ lib/msan/tests/msan_test.cc
@@ -3358,6 +3358,8 @@
   EXPECT_NOT_POISONED(grpres);
 }
 
+// There's no fgetgrent_r() on FreeBSD.
+#if !defined(__FreeBSD__)
 TEST(MemorySanitizer, fgetgrent_r) {
   FILE *fp = fopen("/etc/group", "r");
   struct group grp;
@@ -3373,6 +3375,7 @@
   EXPECT_NOT_POISONED(grpres);
   fclose(fp);
 }
+#endif
 
 TEST(MemorySanitizer, getgroups) {
   int n = getgroups(0, 0);