[Msan] Fix the initgroups.cc test to build on FreeBSD

Differential Revision: http://reviews.llvm.org/D9458

llvm-svn: 236580

diff --git a/compiler-rt/test/msan/initgroups.cc b/compiler-rt/test/msan/initgroups.cc
index d11fd58..974b1cb 100644 (file)
--- a/compiler-rt/test/msan/initgroups.cc
+++ b/compiler-rt/test/msan/initgroups.cc
@@ -2,6 +2,7 @@
 
 #include <sys/types.h>
 #include <grp.h>
+#include <unistd.h>  // FreeBSD declares initgroups() here.
 
 int main(void) {
   initgroups("root", 0);