omp-low.c (mark_loops_in_oacc_kernels_region): Work around -Wmaybe-uninitialized warning.

	* omp-low.c (mark_loops_in_oacc_kernels_region): Work around
	-Wmaybe-uninitialized warning.

From-SVN: r232484

gcc/ChangeLog

-2016-01-16  Sandra Loosemore <sandra@codesourcery.com>
+2016-01-17  Jakub Jelinek  <jakub@redhat.com>
+
+	* omp-low.c (mark_loops_in_oacc_kernels_region): Work around
+	-Wmaybe-uninitialized warning.
+
+2016-01-16  Sandra Loosemore  <sandra@codesourcery.com>
 
 	* doc/invoke.texi (Invoking GCC): Add new section to menu.
 	(Option Summary): Update to reflect new section and moved options.

gcc/omp-low.c

@@ -12543,7 +12543,7 @@ mark_loops_in_oacc_kernels_region (basic_block region_entry,
   /* Don't parallelize the kernels region if it contains more than one outer
      loop.  */
   unsigned int nr_outer_loops = 0;
-  struct loop *single_outer;
+  struct loop *single_outer = NULL;
   for (struct loop *loop = outer->inner; loop != NULL; loop = loop->next)
     {
       gcc_assert (loop_outer (loop) == outer);