[Bug fortran/22491] New: character array parameters do not reduce

[Bug fortran/22491] New: character array parameters do not reduce

[dje at gcc dot gnu dot org]

Work on PR 21730 uncovered that character array initializers do not reduce.

        character*2 a (1)
        character*4 b
        character*6 c
        parameter (a="12")
        parameter (b = a(1))
        write (c,'("#",A,"#")') b
        if (c .ne. '#12  #') call abort
        end
Or:
        character*2 a (1)
        character*4 b (1)
        character*6 c
        parameter (a="12")
        parameter (b = a)
        write (c,'("#",A,"#")') b
        if (c .ne. '#12  #') call abort
        end

expr.c:simplify_parameter_variable() and gfc_simplify_expr() do not eliminate 
all subobject references, preventing the simplification from being used.

-- 
           Summary: character array parameters do not reduce
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dje at gcc dot gnu dot org
                CC: fengwang at gcc dot gnu dot org,gcc-bugs at gcc dot gnu
                    dot org
 GCC build triplet: *-*-*
  GCC host triplet: *-*-*
GCC target triplet: *-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22491

[Bug fortran/22491] character array parameters do not reduce

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-14 17:08 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-07-14 17:08:45
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22491

[Bug fortran/22491] character array parameters do not reduce

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-03 01:55 -------
Subject: Bug 22491

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dje@gcc.gnu.org	2005-08-03 01:55:38

Modified files:
	gcc/fortran    : ChangeLog expr.c 

Log message:
	PR fortran/22491
	* expr.c (simplify_parameter_variable): Do not copy the subobject
	references if the expression value is a constant.
	
	* expr.c (gfc_simplify_expr): Evaluate constant substrings.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&r1=1.509&r2=1.510
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/expr.c.diff?cvsroot=gcc&r1=1.27&r2=1.28



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22491

[Bug fortran/22491] character array parameters do not reduce

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-18 06:20 -------
This is fixed, right?

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22491