r290882 - Handle EmptyDecl in DeclContextPrinter

[Alex Lorenz via cfe-commits]

Author: arphaman
Date: Tue Jan  3 06:09:39 2017
New Revision: 290882

URL: http://llvm.org/viewvc/llvm-project?rev=290882&view=rev
Log:
Handle EmptyDecl in DeclContextPrinter

This commit fixes a crash that occurs when -print-decl-contexts AST consumer
tries to print an unhandled declaration.

rdar://19467234

Differential Revision: https://reviews.llvm.org/D26964

Modified:
    cfe/trunk/lib/Frontend/ASTConsumers.cpp
    cfe/trunk/test/Coverage/cxx-language-features.inc

Modified: cfe/trunk/lib/Frontend/ASTConsumers.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/ASTConsumers.cpp?rev=290882&r1=290881&r2=290882&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/ASTConsumers.cpp (original)
+++ cfe/trunk/lib/Frontend/ASTConsumers.cpp Tue Jan  3 06:09:39 2017
@@ -493,6 +493,10 @@ void DeclContextPrinter::PrintDeclContex
       Out << "<using shadow> " << *cast<UsingShadowDecl>(I) << "\n";
       break;
     }
+    case Decl::Empty: {
+      Out << "<empty>\n";
+      break;
+    }
     default:
       Out << "DeclKind: " << DK << '"' << I << "\"\n";
       llvm_unreachable("decl unhandled");

Modified: cfe/trunk/test/Coverage/cxx-language-features.inc
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Coverage/cxx-language-features.inc?rev=290882&r1=290881&r2=290882&view=diff
==============================================================================
--- cfe/trunk/test/Coverage/cxx-language-features.inc (original)
+++ cfe/trunk/test/Coverage/cxx-language-features.inc Tue Jan  3 06:09:39 2017
@@ -41,3 +41,6 @@ namespace provider {
 namespace user {
   using provider::foo;
 }
+
+// Empty declaration
+;