r195872 - Bring back a StringRef used in some build configurations

[Alp Toker]

Author: alp
Date: Wed Nov 27 13:44:04 2013
New Revision: 195872

URL: http://llvm.org/viewvc/llvm-project?rev=195872&view=rev
Log:
Bring back a StringRef used in some build configurations

This was removed in the great unused local cleanup of r195814.

Adding cast-to-void to suppress unused variable warnings.

Should fix certain builds like ARCMT.

Modified:
    cfe/trunk/lib/FrontendTool/ExecuteCompilerInvocation.cpp

Modified: cfe/trunk/lib/FrontendTool/ExecuteCompilerInvocation.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/FrontendTool/ExecuteCompilerInvocation.cpp?rev=195872&r1=195871&r2=195872&view=diff
==============================================================================
--- cfe/trunk/lib/FrontendTool/ExecuteCompilerInvocation.cpp (original)
+++ cfe/trunk/lib/FrontendTool/ExecuteCompilerInvocation.cpp Wed Nov 27 13:44:04 2013
@@ -32,6 +32,8 @@ using namespace llvm::opt;
 
 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) {
   using namespace clang::frontend;
+  StringRef Action("unknown");
+  (void)Action;
 
   switch (CI.getFrontendOpts().ProgramAction) {
   case ASTDeclList:            return new ASTDeclListAction();