re PR fortran/51302 (ICE with VOLATILE loop variable)

2011-11-25  Tobias Burnus  <burnus@net-b.de>

        PR fortran/51302
        * trans-stmt.c (gfc_trans_simple_do): Add a fold_convert.

2011-11-25  Tobias Burnus  <burnus@net-b.de>

        PR fortran/51302
        * gfortran.dg/volatile13.f90: New.

From-SVN: r181724

gcc/fortran/ChangeLog

+2011-11-25  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/51302
+	* trans-stmt.c (gfc_trans_simple_do): Add a fold_convert.
+
 2011-11-24  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/51218

gcc/fortran/trans-stmt.c

@@ -1259,7 +1259,8 @@ gfc_trans_simple_do (gfc_code * code, stmtblock_t *pblock, tree dovar,
   loc = code->ext.iterator->start->where.lb->location;
 
   /* Initialize the DO variable: dovar = from.  */
-  gfc_add_modify_loc (loc, pblock, dovar, from);
+  gfc_add_modify_loc (loc, pblock, dovar,
+		      fold_convert (TREE_TYPE(dovar), from));
   
   /* Save value for do-tinkering checking. */
   if (gfc_option.rtcheck & GFC_RTCHECK_DO)

gcc/testsuite/ChangeLog

+2011-11-25  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/51302
+	* gfortran.dg/volatile13.f90: New.
+
 2011-11-24  Andrew MacLeod  <amacleod@redhat.com>
 
 	PR c/51256

gcc/testsuite/gfortran.dg/volatile13.f90

+! { dg-do compile }
+!
+! PR fortran/51302
+!
+! Volatile DO variable - was ICEing before
+!
+integer, volatile :: i
+integer :: n = 1
+do i = 1, n
+end do
+end