[cfe-commits] r110913 - /cfe/trunk/include/clang/Basic/IdentifierTable.h

[Argyrios Kyrtzidis]

Author: akirtzidis
Date: Thu Aug 12 07:31:25 2010
New Revision: 110913

URL: http://llvm.org/viewvc/llvm-project?rev=110913&view=rev
Log:
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Modified:
    cfe/trunk/include/clang/Basic/IdentifierTable.h

Modified: cfe/trunk/include/clang/Basic/IdentifierTable.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/IdentifierTable.h?rev=110913&r1=110912&r2=110913&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/IdentifierTable.h (original)
+++ cfe/trunk/include/clang/Basic/IdentifierTable.h Thu Aug 12 07:31:25 2010
@@ -141,7 +141,11 @@
   bool hasRevertedTokenIDToIdentifier() const { return RevertedTokenID; }
 
   /// \brief Revert TokenID to tok::identifier; used for GNU libstdc++ 4.2
-  /// compatibility. 
+  /// compatibility.
+  ///
+  /// TokenID is normally read-only but there are 2 instances where we revert it
+  /// to tok::identifier for libstdc++ 4.2. Keep track of when this happens
+  /// using this method so we can inform PCH about it.
   void RevertTokenIDToIdentifier() {
     assert(TokenID != tok::identifier && "Already at tok::identifier");
     TokenID = tok::identifier;