From 550671691ee841093b72631af3b4bcf7dbad68d6 Mon Sep 17 00:00:00 2001
From: Paolo Carlini <paolo.carlini@oracle.com>
Date: Wed, 4 Mar 2015 10:20:23 +0000
Subject: [PATCH] re PR c++/64227 (Forwarding an argument of a function
 template to a generic lambda causes a compiler crash)

2015-03-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/64227
	* g++.dg/cpp1y/lambda-generic-ice1.C: New.

From-SVN: r221181
---
 gcc/testsuite/ChangeLog                       |  5 +++
 .../g++.dg/cpp1y/lambda-generic-ice1.C        | 42 +++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp1y/lambda-generic-ice1.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a2dadbf9726..f3e7f882b90 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-03-04  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/64227
+	* g++.dg/cpp1y/lambda-generic-ice1.C: New.
+
 2015-03-04  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* gcc.target/aarch64/atomic-comp-swap-release-acquire.c: Add
diff --git a/gcc/testsuite/g++.dg/cpp1y/lambda-generic-ice1.C b/gcc/testsuite/g++.dg/cpp1y/lambda-generic-ice1.C
new file mode 100644
index 00000000000..0e40e62b322
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1y/lambda-generic-ice1.C
@@ -0,0 +1,42 @@
+// PR c++/64227
+// { dg-do compile { target c++14 } }
+
+template<typename T>
+struct remove_reference
+{ typedef T   type; };
+
+template<typename T>
+struct remove_reference<T&>
+{ typedef T   type; };
+
+template<typename T>
+struct remove_reference<T&&>
+{ typedef T   type; };
+
+template<typename T>
+constexpr T&&
+forward(typename remove_reference<T>::type& t) noexcept
+{ return static_cast<T&&>(t); }
+
+template<typename T>
+constexpr T&&
+forward(typename remove_reference<T>::type&& t) noexcept
+{ return static_cast<T&&>(t); }
+
+template<typename T>
+auto greater_than(T&& t)
+{
+  return [val = forward<T&&>(t)] (const auto& arg) { return arg > val; };
+}
+
+template<typename Functor>
+void g(Functor f)
+{
+  for (int i = 0; i < 100000; i++)
+    f(i);
+}
+
+int main()
+{
+  g(greater_than(10));
+}
-- 
2.30.2