re PR c/79116 (ICE on cilkplus array notation with a _Cilk_for)

	PR c/79116
	* array-notation-common.c (cilkplus_extract_an_triplets): Convert
	start type to integer_type.

From-SVN: r244533

gcc/c-family/ChangeLog

+2017-01-17  Aldy Hernandez  <aldyh@redhat.com>
+
+	PR c/79116
+	* array-notation-common.c (cilkplus_extract_an_triplets): Convert
+	start type to integer_type.
+
 2017-01-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR driver/49726

gcc/c-family/array-notation-common.c

@@ -628,7 +628,9 @@ cilkplus_extract_an_triplets (vec<tree, va_gc> *list, size_t size, size_t rank,
 	  tree ii_tree = array_exprs[ii][jj];
 	  (*node)[ii][jj].is_vector = true;
 	  (*node)[ii][jj].value = ARRAY_NOTATION_ARRAY (ii_tree);
-	  (*node)[ii][jj].start = ARRAY_NOTATION_START (ii_tree);
+	  (*node)[ii][jj].start
+	    = fold_build1 (CONVERT_EXPR, integer_type_node,
+			   ARRAY_NOTATION_START (ii_tree));
 	  (*node)[ii][jj].length
 	    = fold_build1 (CONVERT_EXPR, integer_type_node,
 			   ARRAY_NOTATION_LENGTH (ii_tree));

gcc/testsuite/gcc.dg/cilk-plus/pr79116.c

+/* { dg-do compile } */
+/* { dg-options "-fcilkplus" } */
+
+int array[1024];
+void foo()
+{
+  _Cilk_for (int i = 0; i < 512; ++i)
+    array[:] = __sec_implicit_index(0);
+}