re PR fortran/71799 (ICE in DO loop code emission (gfc_resolve_iterator))

2016-07-28  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/71799
	* resolve.c(gfc_resolve_iterator): Failure of type conversion need
	not ICE.

2016-07-28  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/71799
	* gfortran.dg/pr71799.f90: New test.

From-SVN: r238830

gcc/fortran/ChangeLog

 2016-07-28  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/71799
+	* resolve.c(gfc_resolve_iterator): Failure of type conversion need
+	not ICE.
+
+2016-07-28  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/71859
 	* check.c(numeric_check): Prevent ICE.  Issue error for invalid
 	subroutine as an actual argument when numeric argument is expected.

gcc/fortran/resolve.c

@@ -6515,15 +6515,15 @@ gfc_resolve_iterator (gfc_iterator *iter, bool real_ok, bool own_scope)
   /* Convert start, end, and step to the same type as var.  */
   if (iter->start->ts.kind != iter->var->ts.kind
       || iter->start->ts.type != iter->var->ts.type)
-    gfc_convert_type (iter->start, &iter->var->ts, 2);
+    gfc_convert_type (iter->start, &iter->var->ts, 1);
 
   if (iter->end->ts.kind != iter->var->ts.kind
       || iter->end->ts.type != iter->var->ts.type)
-    gfc_convert_type (iter->end, &iter->var->ts, 2);
+    gfc_convert_type (iter->end, &iter->var->ts, 1);
 
   if (iter->step->ts.kind != iter->var->ts.kind
       || iter->step->ts.type != iter->var->ts.type)
-    gfc_convert_type (iter->step, &iter->var->ts, 2);
+    gfc_convert_type (iter->step, &iter->var->ts, 1);
 
   if (iter->start->expr_type == EXPR_CONSTANT
       && iter->end->expr_type == EXPR_CONSTANT

gcc/testsuite/ChangeLog

+2016-07-28  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/71799
+	* gfortran.dg/pr71799.f90: New test.
+
 2016-07-28  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/71665

gcc/testsuite/gfortran.dg/pr71799.f90

+! { dg-do compile }
+subroutine test2(s)
+integer(1) :: i
+integer (8) :: s
+
+do i = 10, HUGE(i) - 10, 222 ! { dg-error "overflow converting" }
+  s = s + 1
+end do
+
+end subroutine test2