-Make TokenID of IdentifierInfo read-only, remove setTokenID().
-There are 2 instances that change the TokenID for GNU libstdc++ 4.2 compatibility.
To handler those cases introduce a RevertedTokenID bitfield, RevertTokenIDToIdentifier() and hasRevertedTokenIDToIdentifier() methods.
Store the bitfield in PCH.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110868 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/cxx-traits.cpp b/test/PCH/cxx-traits.cpp
new file mode 100644
index 0000000..69c6475
--- /dev/null
+++ b/test/PCH/cxx-traits.cpp
@@ -0,0 +1,8 @@
+// Test this without pch.
+// RUN: %clang_cc1 -include %S/cxx-traits.h -fsyntax-only -verify %s
+
+// RUN: %clang_cc1 -x c++-header -emit-pch -o %t %S/cxx-traits.h
+// RUN: %clang_cc1 -include-pch %t -fsyntax-only -verify %s
+
+bool _Is_pod_comparator = __is_pod<int>::__value;
+bool _Is_empty_check = __is_empty<int>::__value;