Fix an ast-print/ast-dump bug.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44550 91177308-0d34-0410-b5e6-96231b3b80d8

Driver/ASTConsumers.cpp

@@ -60,9 +60,9 @@ void DeclPrinter::PrintFunctionDeclStart(FunctionDecl *FD) {
     Out << "inline ";
   
   std::string Proto = FD->getName();
-  FunctionType *AFT = cast<FunctionType>(FD->getType());
+  const FunctionType *AFT = FD->getType()->getAsFunctionType();
 
-  if (FunctionTypeProto *FT = dyn_cast<FunctionTypeProto>(AFT)) {
+  if (const FunctionTypeProto *FT = dyn_cast<FunctionTypeProto>(AFT)) {
     Proto += "(";
     for (unsigned i = 0, e = FD->getNumParams(); i != e; ++i) {
       if (i) Proto += ", ";

test/Sema/ast-print.c

@@ -0,0 +1,6 @@
+// RUN: clang %s -ast-print
+
+typedef void func_typedef();
+func_typedef xxx;
+
+