add c++ search path for GCC 4.2, PR3668, patch by Pawel Worach!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65462 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/InitHeaderSearch.cpp b/lib/Driver/InitHeaderSearch.cpp
index 5b0b2c2..78750ba 100644
--- a/lib/Driver/InitHeaderSearch.cpp
+++ b/lib/Driver/InitHeaderSearch.cpp
@@ -171,9 +171,11 @@
     AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/backward",
             System, true, false, false);
 
-
     // DragonFly
     AddPath("/usr/include/c++/4.1", System, true, false, false);
+
+    // FreeBSD
+    AddPath("/usr/include/c++/4.2", System, true, false, false);
   }
 
   AddPath("/usr/local/include", System, false, false, false);