re PR c++/67511 (ICE with invalid OpenMP random access iterator)

	PR c++/67511
	* semantics.c (handle_omp_for_class_iterator): Don't wrap
	error_mark_node into a NOP_EXPR to void_type_node.

	* g++.dg/gomp/pr67511.C: New test.

From-SVN: r227606

gcc/cp/ChangeLog

+2015-09-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/67511
+	* semantics.c (handle_omp_for_class_iterator): Don't wrap
+	error_mark_node into a NOP_EXPR to void_type_node.
+
 2015-09-09  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/53184

gcc/cp/semantics.c

@@ -6453,7 +6453,8 @@ handle_omp_for_class_iterator (int i, location_t locus, tree declv, tree initv,
   iter_init = build_x_modify_expr (elocus,
 				   iter, PLUS_EXPR, iter_init,
 				   tf_warning_or_error);
-  iter_init = build1 (NOP_EXPR, void_type_node, iter_init);
+  if (iter_init != error_mark_node)
+    iter_init = build1 (NOP_EXPR, void_type_node, iter_init);
   finish_expr_stmt (iter_init);
   finish_expr_stmt (build_x_modify_expr (elocus,
 					 last, NOP_EXPR, decl,

gcc/testsuite/ChangeLog

 2015-09-10  Jakub Jelinek  <jakub@redhat.com>
 
+	PR c++/67511
+	* g++.dg/gomp/pr67511.C: New test.
+
 	PR c/67502
 	* c-c++-common/gomp/pr67502.c: New test.
 

gcc/testsuite/g++.dg/gomp/pr67511.C

+// PR c++/67511
+// { dg-do compile }
+// { dg-options "-fopenmp" }
+
+struct I
+{
+  I ();
+  I (const I &);
+  I &operator++ ();
+  bool operator< (const I &) const;
+};
+__PTRDIFF_TYPE__ operator- (const I &, const I &);
+
+void
+foo (I &x, I &y)
+{
+#pragma omp for
+  for (I i = x; i < y; ++i)	// { dg-error "no match for" }
+    ;
+}