From 92516a8e7ab2d9bb7529fa55987f9ef5a13bc4b6 Mon Sep 17 00:00:00 2001
From: Nikola Smiljanic <popizdeh@gmail.com>
Date: Sun, 24 Aug 2014 23:28:47 +0000
Subject: PR20716 - Crash when recovering from type in known dependent base.

llvm-svn: 216352
---
 clang/lib/Sema/SemaDecl.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'clang/lib/Sema/SemaDecl.cpp')

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 0244d4c4a30..5293188214c 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -152,7 +152,10 @@ static ParsedType recoverFromTypeInKnownDependentBase(Sema &S,
     auto *TD = TST->getTemplateName().getAsTemplateDecl();
     if (!TD)
       continue;
-    auto *BasePrimaryTemplate = cast<CXXRecordDecl>(TD->getTemplatedDecl());
+    auto *BasePrimaryTemplate =
+        dyn_cast_or_null<CXXRecordDecl>(TD->getTemplatedDecl());
+    if (!BasePrimaryTemplate)
+      continue;
     // FIXME: Allow lookup into non-dependent bases of dependent bases, possibly
     // by calling or integrating with the main LookupQualifiedName mechanism.
     for (NamedDecl *ND : BasePrimaryTemplate->lookup(&II)) {
-- 
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