From 49c1f7a6c54fe16b603d409df4974e584efbe2ea Mon Sep 17 00:00:00 2001
From: Paolo Carlini <paolo.carlini@oracle.com>
Date: Fri, 8 Mar 2019 21:22:07 +0000
Subject: [PATCH] re PR c++/63540 (Erroneous "'Derived' declares a move
 constructor or move assignment operator" in error.)

2019-03-08  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/63540
	* g++.dg/cpp0x/implicit17.C: New.

From-SVN: r269508
---
 gcc/testsuite/ChangeLog                 |  5 +++++
 gcc/testsuite/g++.dg/cpp0x/implicit17.C | 18 ++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp0x/implicit17.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f38eb2a5aa7..0b820ac00bd 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-03-08  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/63540
+	* g++.dg/cpp0x/implicit17.C: New.
+
 2019-03-08  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/22149
diff --git a/gcc/testsuite/g++.dg/cpp0x/implicit17.C b/gcc/testsuite/g++.dg/cpp0x/implicit17.C
new file mode 100644
index 00000000000..795bc4d5dd1
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/implicit17.C
@@ -0,0 +1,18 @@
+// PR c++/63540
+// { dg-do compile { target c++11 } }
+
+template <typename T,
+	  typename = decltype(*static_cast<T*>(0) = 0)> int break_it();
+template <typename> int break_it();
+
+struct Base {
+  Base(const Base &);
+  void operator=(Base &&);
+};
+
+struct Derived : Base {
+  using Base::operator=;
+};
+
+int a = break_it<Derived>();
+Derived v(v);
-- 
2.30.2