Handle UsingDecl and UsingShadowDecl 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

llvm-svn: 290881

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/Frontend/ASTConsumers.cpp b/clang/lib/Frontend/ASTConsumers.cpp
index 329f15fbef1..2bb78b3d306 100644
--- a/clang/lib/Frontend/ASTConsumers.cpp
+++ b/clang/lib/Frontend/ASTConsumers.cpp
@@ -485,6 +485,14 @@ void DeclContextPrinter::PrintDeclContext(const DeclContext* DC,
       Out << "\n";
       break;
     }
+    case Decl::Using: {
+      Out << "<using> " << *cast<UsingDecl>(I) << "\n";
+      break;
+    }
+    case Decl::UsingShadow: {
+      Out << "<using shadow> " << *cast<UsingShadowDecl>(I) << "\n";
+      break;
+    }
     default:
       Out << "DeclKind: " << DK << '"' << I << "\"\n";
       llvm_unreachable("decl unhandled");