PR middle-end/56217

	* omp-low.c (use_pointer_for_field): Return false if
	lower_send_shared_vars doesn't generate any copy-out code.

	* g++.dg/gomp/pr56217.C: New test.

	* testsuite/libgomp.c++/pr56217.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195796 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 36 insertions, 0 deletions

diff --git a/libgomp/testsuite/libgomp.c++/pr56217.C b/libgomp/testsuite/libgomp.c++/pr56217.C
new file mode 100644
index 00000000000..19da9185350
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c++/pr56217.C
@@ -0,0 +1,36 @@
+// PR middle-end/56217
+// { dg-do run }
+// { dg-options "-std=c++0x" }
+
+extern "C" void abort ();
+
+template <typename T>
+struct ptr {
+  T *p;
+  ptr () : p () {}
+  ptr (ptr &) = delete;
+  ptr (ptr &&o) : p(o) {}
+  operator T * () { return p; }
+};
+
+int a[6] = { 100, 101, 102, 103, 104, 105 };
+
+static ptr<int>
+f ()
+{
+  ptr<int> pt;
+  #pragma omp task shared (pt)
+    pt.p = a + 2;
+  #pragma omp taskwait
+  return pt;
+}
+
+int
+main ()
+{
+  ptr<int> pt;
+  #pragma omp parallel
+  #pragma omp single
+  if (f () != a + 2 || *f () != 102)
+    abort ();
+}