From 77efd154f33154e819186de79687ea55552139f4 Mon Sep 17 00:00:00 2001
From: Paolo Carlini <paolo.carlini@oracle.com>
Date: Mon, 30 Oct 2017 22:41:21 +0000
Subject: [PATCH] re PR c++/67595 (concepts code causes segfault)

2017-10-30  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67595
	* g++.dg/concepts/pr67595.C: New.

From-SVN: r254245
---
 gcc/testsuite/ChangeLog                 |  5 +++++
 gcc/testsuite/g++.dg/concepts/pr67595.C | 13 +++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/concepts/pr67595.C

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e17c94d..33aaba8 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-10-30  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/67595
+	* g++.dg/concepts/pr67595.C: New.
+
 2017-10-30  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/80850
diff --git a/gcc/testsuite/g++.dg/concepts/pr67595.C b/gcc/testsuite/g++.dg/concepts/pr67595.C
new file mode 100644
index 0000000..63162fb
--- /dev/null
+++ b/gcc/testsuite/g++.dg/concepts/pr67595.C
@@ -0,0 +1,13 @@
+// { dg-options "-std=c++17 -fconcepts" }
+
+template <class X> concept bool allocatable = requires{{new X}->X * };
+template <class X> concept bool semiregular = allocatable<X>;
+template <class X> concept bool readable = requires{requires semiregular<X>};
+template <class> int weak_input_iterator = requires{{0}->readable};
+template <class X> bool input_iterator{weak_input_iterator<X>};
+template <class X> bool forward_iterator{input_iterator<X>};
+template <class X> bool bidirectional_iterator{forward_iterator<X>};
+template <class X>
+concept bool random_access_iterator{bidirectional_iterator<X>};
+void fn1(random_access_iterator);
+int main() { fn1(0); }  // { dg-error "" }
-- 
2.7.4