[cfe-commits] r38710 - /cfe/cfe/trunk/Lex/MacroExpander.cpp

[sabre at cs.uiuc.edu]

Author: sabre
Date: Wed Jul 11 11:24:00 2007
New Revision: 38710

URL: http://llvm.org/viewvc/llvm-project?rev=38710&view=rev
Log:
Add a comment giving an example of the error

Modified:
    cfe/cfe/trunk/Lex/MacroExpander.cpp

Modified: cfe/cfe/trunk/Lex/MacroExpander.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/cfe/trunk/Lex/MacroExpander.cpp?rev=38710&r1=38709&r2=38710&view=diff

==============================================================================
--- cfe/cfe/trunk/Lex/MacroExpander.cpp (original)
+++ cfe/cfe/trunk/Lex/MacroExpander.cpp Wed Jul 11 11:24:00 2007
@@ -73,6 +73,7 @@
     while (Result[FirstNonSlash] == '\\')
       --FirstNonSlash;
     if ((Result.size()-1-FirstNonSlash) & 1) {
+      // Diagnose errors for things like: #define F(X) #X   /   F(\)
       PP.Diag(Toks.back(), diag::pp_invalid_string_literal);
       Result.erase(Result.end()-1);  // remove one of the \'s.
     }