From e6517d3943ab2b51bd63ed37d6181e02b5461c86 Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@redhat.com>
Date: Mon, 30 Jun 2014 14:44:24 -0400
Subject: [PATCH] re PR c++/61647 (internal compiler error: in
 push_access_scope, at cp/pt.c:219 for a c++ header, clang++ 3.4 generate .pch
 without error)

	PR c++/61647
	* pt.c (type_dependent_expression_p): Check BASELINK_OPTYPE.

From-SVN: r212163
---
 gcc/cp/ChangeLog                       |  3 +++
 gcc/cp/pt.c                            |  7 +++++-
 gcc/testsuite/g++.dg/template/conv14.C | 30 ++++++++++++++++++++++++++
 3 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/g++.dg/template/conv14.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index d67a63e15a98..48084942cd71 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,8 @@
 2014-06-30  Jason Merrill  <jason@redhat.com>
 
+	PR c++/61647
+	* pt.c (type_dependent_expression_p): Check BASELINK_OPTYPE.
+
 	PR c++/61539
 	* pt.c (unify_one_argument): Type/expression mismatch just causes
 	deduction failure.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 3ddd4b8a1f1f..a1888921a2fa 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -20011,7 +20011,12 @@ type_dependent_expression_p (tree expression)
 	return true;
 
       if (BASELINK_P (expression))
-	expression = BASELINK_FUNCTIONS (expression);
+	{
+	  if (BASELINK_OPTYPE (expression)
+	      && dependent_type_p (BASELINK_OPTYPE (expression)))
+	    return true;
+	  expression = BASELINK_FUNCTIONS (expression);
+	}
 
       if (TREE_CODE (expression) == TEMPLATE_ID_EXPR)
 	{
diff --git a/gcc/testsuite/g++.dg/template/conv14.C b/gcc/testsuite/g++.dg/template/conv14.C
new file mode 100644
index 000000000000..509ae6a65465
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/conv14.C
@@ -0,0 +1,30 @@
+// PR c++/61647
+
+class XX;
+
+template<typename Container, typename Key>
+struct Accessor;
+
+template<typename Container, typename Key, typename KeyStore = Key>
+class Variant {
+protected:
+    KeyStore index;
+    Container state;
+public:
+    Variant(Container st, const Key& i) : index(i), state(st) {}
+
+    template<typename T>
+    operator T() const {
+        return Accessor<Container, KeyStore>::template get<T>(state, index);
+    }
+};
+
+class AutoCleanVariant : public Variant<XX*, int> {
+public:
+    AutoCleanVariant(XX* st, int i) : Variant<XX*,int>(st,i) {}
+
+    template<typename T>
+    operator T() const {
+         return Variant<XX*, int>::operator T();
+    }
+};
-- 
2.47.2