[Preprocessor] For the MacroExpands preprocessor callback, also pass the MacroArgs object that provides information about
the argument tokens for a function macro.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181065 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index e5b00d6..1678233 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -13,7 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Lex/Preprocessor.h"
-#include "MacroArgs.h"
+#include "clang/Lex/MacroArgs.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/TargetInfo.h"
@@ -223,7 +223,7 @@
   // If this is a builtin macro, like __LINE__ or _Pragma, handle it specially.
   if (MI->isBuiltinMacro()) {
     if (Callbacks) Callbacks->MacroExpands(Identifier, MD,
-                                           Identifier.getLocation());
+                                           Identifier.getLocation(),/*Args=*/0);
     ExpandBuiltinMacro(Identifier);
     return false;
   }
@@ -277,11 +277,12 @@
       DelayedMacroExpandsCallbacks.push_back(
                               MacroExpandsInfo(Identifier, MD, ExpansionRange));
     } else {
-      Callbacks->MacroExpands(Identifier, MD, ExpansionRange);
+      Callbacks->MacroExpands(Identifier, MD, ExpansionRange, Args);
       if (!DelayedMacroExpandsCallbacks.empty()) {
         for (unsigned i=0, e = DelayedMacroExpandsCallbacks.size(); i!=e; ++i) {
           MacroExpandsInfo &Info = DelayedMacroExpandsCallbacks[i];
-          Callbacks->MacroExpands(Info.Tok, Info.MD, Info.Range);
+          // FIXME: We lose macro args info with delayed callback.
+          Callbacks->MacroExpands(Info.Tok, Info.MD, Info.Range, /*Args=*/0);
         }
         DelayedMacroExpandsCallbacks.clear();
       }