From b578aee665aad5ed1a46a26217c730fdfbfc8c2e Mon Sep 17 00:00:00 2001
From: David Blaikie <dblaikie@gmail.com>
Date: Wed, 7 Nov 2012 19:08:05 +0000
Subject: [PATCH] PR12713 - crash on invalid due to unmatched parens in
 decltype

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167547 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Parse/Parser.cpp      | 4 ++--
 test/SemaCXX/decltype.cpp | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/lib/Parse/Parser.cpp b/lib/Parse/Parser.cpp
index 7bf4220199..f4cdd619ce 100644
--- a/lib/Parse/Parser.cpp
+++ b/lib/Parse/Parser.cpp
@@ -1940,8 +1940,8 @@ bool BalancedDelimiterTracker::diagnoseMissingClose() {
   }
   P.Diag(P.Tok, DID);
   P.Diag(LOpen, diag::note_matching) << LHSName;
-  if (P.SkipUntil(Close))
-    LClose = P.Tok.getLocation();
+  if (P.SkipUntil(Close, /*StopAtSemi*/ true, /*DontConsume*/ true))
+    LClose = P.ConsumeAnyToken();
   return true;
 }
 
diff --git a/test/SemaCXX/decltype.cpp b/test/SemaCXX/decltype.cpp
index f9bdececc4..ccde3dcfb3 100644
--- a/test/SemaCXX/decltype.cpp
+++ b/test/SemaCXX/decltype.cpp
@@ -36,3 +36,10 @@ struct C {
   C(decltype(undeclared; // expected-error {{undeclared identifier}} \
                          // expected-error {{expected ')'}} expected-note {{to match this '('}}
 };
+
+template<typename>
+class conditional {
+};
+
+void foo(conditional<decltype((1),int>) {  // expected-note 2 {{to match this '('}} expected-error {{expected ')'}}
+} // expected-error {{expected function body after function declarator}} expected-error 2 {{expected '>'}} expected-error {{expected ')'}}
-- 
2.40.0