re PR fortran/84506 (INQUIRE(pos=) always sets pos=0 with -fdefault-integer-8)

2018-02-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/84506
	* trans-io.c (set_parameter_value_inquire): Adjust range check of
	negative unit values for kind=8 units to the kind=4 negative limit.

	* gfortran.dg/inquire_19.f90: New test.

From-SVN: r257941

gcc/fortran/ChangeLog

+2018-02-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR fortran/84506
+	* trans-io.c (set_parameter_value_inquire): Adjust range check of
+	negative unit values for kind=8 units to the kind=4 negative limit.
+
 2018-02-23  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/83149

gcc/fortran/trans-io.c

@@ -639,12 +639,12 @@ set_parameter_value_inquire (stmtblock_t *block, tree var,
       /* Don't evaluate the UNIT number multiple times.  */
       se.expr = gfc_evaluate_now (se.expr, &se.pre);
 
-      /* UNIT numbers should be greater than zero.  */
+      /* UNIT numbers should be greater than the min.  */
       i = gfc_validate_kind (BT_INTEGER, 4, false);
+      val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].pedantic_min_int, 4);
       cond1 = build2_loc (input_location, LT_EXPR, logical_type_node,
 			  se.expr,
-			  fold_convert (TREE_TYPE (se.expr),
-			  integer_zero_node));
+			  fold_convert (TREE_TYPE (se.expr), val));
       /* UNIT numbers should be less than the max.  */
       val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].huge, 4);
       cond2 = build2_loc (input_location, GT_EXPR, logical_type_node,

gcc/testsuite/ChangeLog

+2018-02-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR fortran/84506
+	* gfortran.dg/inquire_19.f90: New test.
+
 2018-02-23  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/83149

gcc/testsuite/gfortran.dg/inquire_19.f90

+! { dg-do run }
+! PR84506  INQUIRE(pos=) always sets pos=0 with -fdefault-integer-8
+program TestInquire
+   implicit none
+   integer(8) :: iUnit
+   integer(8) :: iPos
+   open(newunit=iunit, file='output.txt', access='stream', status='replace')
+   write(iUnit) 'TEXT'
+   inquire(iUnit, pos=iPos)
+   close(iUnit, status='delete')
+   !print *, iPos
+   if (iPos.ne.5) stop 1
+end program TestInquire