diff -uprb clang-2.6.orig/lib/Frontend/InitHeaderSearch.cpp clang-2.6/lib/Frontend/InitHeaderSearch.cpp
--- clang-2.6.orig/lib/Frontend/InitHeaderSearch.cpp	2010-05-26 21:38:10.000000000 +0200
+++ clang-2.7/lib/Frontend/InitHeaderSearch.cpp	2010-05-26 21:38:10.000000000 +0200
@@ -178,12 +178,12 @@ void InitHeaderSearch::AddDefaultSystemI
         false);
     AddPath("/usr/include/c++/4.4/backward", System, true, false, false);
 
-    // Arch Linux 2008-06-24
-    AddPath("/usr/include/c++/4.3.1", System, true, false, false);
-    AddPath("/usr/include/c++/4.3.1/i686-pc-linux-gnu", System, true, false,
+    // Arch Linux 2010-04-30
+    AddPath("/usr/include/c++/4.5.0", System, true, false, false);
+    AddPath("/usr/include/c++/4.5.0/i686-pc-linux-gnu", System, true, false,
         false);
-    AddPath("/usr/include/c++/4.3.1/backward", System, true, false, false);
-    AddPath("/usr/include/c++/4.3.1/x86_64-unknown-linux-gnu", System, true,
+    AddPath("/usr/include/c++/4.5.0/backward", System, true, false, false);
+    AddPath("/usr/include/c++/4.5.0/x86_64-unknown-linux-gnu", System, true,
         false, false);
 
     // Gentoo x86 2009.0 stable