From: Chris Lattner <sabre@nondot.org>
Date: Wed, 25 Mar 2009 21:01:40 +0000 (+0000)
Subject: remove some dead code.  ArgTokens can never be empty, because it is always
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=03162d6d2aef5667816ce19788b6a752299bea43;p=clang

remove some dead code.  ArgTokens can never be empty, because it is always
terminated with an EOF token.  The condition it is trying to check for is
handled by this code above.

    // Empty arguments are standard in C99 and supported as an extension in
    // other modes.
    if (ArgTokens.empty() && !Features.C99)
      Diag(Tok, diag::ext_empty_fnmacro_arg);




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67705 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index 712918b7c3..6ec306196d 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -390,15 +390,6 @@ MacroArgs *Preprocessor::ReadFunctionLikeMacroArgs(Token &MacroName,
       //   #define A(x, foo...) blah(a, ## foo) 
       //   #define A(x, ...) blah(a, ## __VA_ARGS__) 
       isVarargsElided = MI->getNumArgs() > 1;
-    } else if (MI->getNumArgs() == 1) {
-      // #define A(x)
-      //   A()
-      // is ok because it is an empty argument.
-      
-      // Empty arguments are standard in C99 and supported as an extension in
-      // other modes.
-      if (ArgTokens.empty() && !Features.C99)
-        Diag(Tok, diag::ext_empty_fnmacro_arg);
     } else {
       // Otherwise, emit the error.
       Diag(Tok, diag::err_too_few_args_in_macro_invoc);