Add an intermediate typedef for __builtin_va_tag to make it a bit easier 
to deal with for AST pretty-printing/rewriting.  Patch by Abramo 
Bagnara.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74752 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 561dc57..3f7d9a3 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -960,7 +960,8 @@
            "  unsigned fp_offset;"
            "  void* overflow_arg_area;"
            "  void* reg_save_area;"
-           "} __builtin_va_list[1];";
+           "} __va_list_tag;"
+           "typedef __va_list_tag __builtin_va_list[1];";
   }
 };
 } // end anonymous namespace