From e222497dcb808dc0c8e24dcded5b90bac4b59122 Mon Sep 17 00:00:00 2001
From: Nathan Sidwell <nathan@acm.org>
Date: Thu, 10 Jan 2019 12:32:03 +0000
Subject: [PATCH] Add testcase from PR71959

	libgomp/

	PR lto/71959
	* testsuite/libgomp.oacc-c++/pr71959-aux.cc: New.
	* testsuite/libgomp.oacc-c++/pr71959.C: New.

Co-Authored-By: Julian Brown <julian@codesourcery.com>

From-SVN: r267806
---
 libgomp/ChangeLog                             |  7 ++++
 .../testsuite/libgomp.oacc-c++/pr71959-aux.cc | 35 +++++++++++++++++++
 libgomp/testsuite/libgomp.oacc-c++/pr71959.C  | 31 ++++++++++++++++
 3 files changed, 73 insertions(+)
 create mode 100644 libgomp/testsuite/libgomp.oacc-c++/pr71959-aux.cc
 create mode 100644 libgomp/testsuite/libgomp.oacc-c++/pr71959.C

diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 9bb7e89367d..100bbdc7748 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,10 @@
+2019-01-10  Nathan Sidwell  <nathan@acm.org>
+	    Julian Brown  <julian@codesourcery.com>
+
+	PR lto/71959
+	* testsuite/libgomp.oacc-c++/pr71959-aux.cc: New.
+	* testsuite/libgomp.oacc-c++/pr71959.C: New.
+
 2019-01-09  Sebastian Huber  <sebastian.huber@embedded-brains.de>
 
 	* config/rtems/bar.c: Include "../linux/bar.c" and delete copy
diff --git a/libgomp/testsuite/libgomp.oacc-c++/pr71959-aux.cc b/libgomp/testsuite/libgomp.oacc-c++/pr71959-aux.cc
new file mode 100644
index 00000000000..10a6eeb644c
--- /dev/null
+++ b/libgomp/testsuite/libgomp.oacc-c++/pr71959-aux.cc
@@ -0,0 +1,35 @@
+// { dg-do compile }
+
+#define STR1(X) #X
+#define STR2(X) STR1(X)
+#define LABEL(X) STR2(__USER_LABEL_PREFIX__) X
+
+struct Iter
+{
+  int *cursor;
+
+  void ctor (int *cursor_) asm (LABEL ("_ZN4IterC1EPi"));
+  int *point () const asm (LABEL ("_ZNK4Iter5pointEv"));
+};
+
+#pragma acc routine
+void Iter::ctor (int *cursor_)
+{
+  cursor = cursor_;
+}
+
+#pragma acc routine
+int *Iter::point () const
+{
+  return cursor;
+}
+
+void apply (int (*fn)(), Iter out) asm (LABEL ("_ZN5Apply5applyEPFivE4Iter"));
+
+#pragma acc routine
+void apply (int (*fn)(), struct Iter out)
+{ *out.point() = fn (); }
+
+extern "C" void __gxx_personality_v0 ()
+{
+}
diff --git a/libgomp/testsuite/libgomp.oacc-c++/pr71959.C b/libgomp/testsuite/libgomp.oacc-c++/pr71959.C
new file mode 100644
index 00000000000..bf27a75c784
--- /dev/null
+++ b/libgomp/testsuite/libgomp.oacc-c++/pr71959.C
@@ -0,0 +1,31 @@
+// { dg-additional-sources "pr71959-aux.cc" }
+
+// PR lto/71959 ICEd LTO due to mismatch between writing & reading behaviour
+
+struct Iter
+{
+  int *cursor;
+
+  Iter(int *cursor_) : cursor(cursor_) {}
+
+  int *point() const { return cursor; }
+};
+
+#pragma acc routine seq
+int one () { return 1; }
+
+struct Apply
+{
+  static void apply (int (*fn)(), Iter out)
+  { *out.point() = fn (); }
+};
+
+int main ()
+{
+  int x;
+
+#pragma acc parallel copyout(x)
+  Apply::apply (one, Iter (&x));
+
+  return x != 1;
+}
-- 
2.30.2