diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index c43118c..3bc5661 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -294,6 +294,8 @@
                                  getFrontendOpts().DebugCodeCompletionPrinter,
                                  getFrontendOpts().ShowMacrosInCodeCompletion,
                                  llvm::outs()));
+  if (!CompletionConsumer)
+    return;
 
   if (CompletionConsumer->isOutputBinary() &&
       llvm::sys::Program::ChangeStdoutToBinary()) {