Replace XALLOCAVEC with XCNEWVEC (PR c/79471).

2017-02-13  Martin Liska  <mliska@suse.cz>

	PR c/79471
	* calls.c (expand_call): Replace XALLOCAVEC with XCNEWVEC.

From-SVN: r245385

gcc/ChangeLog

+2017-02-13  Martin Liska  <mliska@suse.cz>
+
+	PR c/79471
+	* calls.c (expand_call): Replace XALLOCAVEC with XCNEWVEC.
+
 2017-02-13  Richard Biener  <rguenther@suse.de>
 
 	* configure.ac (HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS):

gcc/calls.c

@@ -3262,8 +3262,7 @@ expand_call (tree exp, rtx target, int ignore)
     n_named_args = num_actuals;
 
   /* Make a vector to hold all the information about each arg.  */
-  args = XALLOCAVEC (struct arg_data, num_actuals);
-  memset (args, 0, num_actuals * sizeof (struct arg_data));
+  args = XCNEWVEC (struct arg_data, num_actuals);
 
   /* Build up entries in the ARGS array, compute the size of the
      arguments into ARGS_SIZE, etc.  */
@@ -4265,6 +4264,7 @@ expand_call (tree exp, rtx target, int ignore)
   currently_expanding_call--;
 
   free (stack_usage_map_buf);
+  free (args);
 
   /* Join result with returned bounds so caller may use them if needed.  */
   target = chkp_join_splitted_slot (target, valbnd);