-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.

llvm-svn: 110868

2 files changed, 19 insertions, 0 deletions

diff --git a/clang/test/PCH/cxx-traits.cpp b/clang/test/PCH/cxx-traits.cpp
new file mode 100644
index 00000000000..69c64758aea
--- /dev/null
+++ b/clang/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;
diff --git a/clang/test/PCH/cxx-traits.h b/clang/test/PCH/cxx-traits.h
new file mode 100644
index 00000000000..62722ab1793
--- /dev/null
+++ b/clang/test/PCH/cxx-traits.h
@@ -0,0 +1,11 @@
+// Header for PCH test cxx-traits.cpp
+
+template<typename _Tp>
+struct __is_pod {
+  enum { __value };
+};
+
+template<typename _Tp>
+struct __is_empty {
+  enum { __value };
+};