Re: fortran/2284: gdb v6.6 adresses fortran arrays incorrectly.

Re: fortran/2284: gdb v6.6 adresses fortran arrays incorrectly.

[drow]

Synopsis: gdb v6.6 adresses fortran arrays incorrectly.

State-Changed-From-To: open->closed
State-Changed-By: drow
State-Changed-When: Thu Oct 11 13:41:44 2007
State-Changed-Why:
    I tried a newer GDB with gfortran 4.1.3 and gfortran 4.2.1.  Both worked fine, so I agree with Bud.  Please let us know if you can reproduce this with a newer gfortran.

http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2284

Re: fortran/2284: gdb v6.6 adresses fortran arrays incorrectly.

[Bud Davis]

The following reply was made to PR fortran/2284; it has been noted by GNATS.

From: Bud Davis <bdavis9659@sbcglobal.net>
To: gdb-gnats@sources.redhat.com
Cc:  
Subject: Re: fortran/2284: gdb v6.6 adresses fortran arrays incorrectly.
Date: Wed, 10 Oct 2007 19:25:33 -0700 (PDT)

  below is gdb6.6 output.
 
 
 if i was to guess, i would say it was a gfortran problem.
 gfortran version used:
 
 gcc version 4.3.0 20071009 (experimental) (GCC) 
 
 
 may i recomend closure with no further action taken ?
 
 --bud davis
 
 
 
 
 
 [bdavis@localhost current]$ gdb a.out
 GNU gdb 6.6
 Copyright (C) 2006 Free Software Foundation, Inc.
 GDB is free software, covered by the GNU General Public License, and you are
 welcome to change it and/or distribute copies of it under certain conditions.
 Type "show copying" to see the conditions.
 There is absolutely no warranty for GDB.  Type "show warranty" for details.
 This GDB was configured as "i686-pc-linux-gnu"...
 Using host libthread_db library "/lib/libthread_db.so.1".
 (gdb) break b.f:4
 Breakpoint 1 at 0x8048245: file b.f, line 4.
 (gdb) run
 Starting program: /home/bdavis/gcc/current/a.out 
 
 Breakpoint 1, MAIN__ () at b.f:4
 4             print *, myarr(1)
 Current language:  auto; currently fortran
 (gdb) p myarr
 $1 = (1, 2, 3, 4, 5, 6, 7, 8, 9, 0)
 (gdb) p myarr(1)
 $2 = 1
 (gdb) p myarr(2)
 $3 = 2
 (gdb) p myarr(10)
 $4 = 0
 

fortran/2284: gdb v6.6 adresses fortran arrays incorrectly.

[satyaakam]

>Number:         2284
>Category:       fortran
>Synopsis:       gdb v6.6 adresses fortran arrays incorrectly.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 10 18:28:01 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     satyaakam@yahoo.co.in
>Release:        6.6
>Organization:
>Environment:

>Description:
gdb v6.6 can adress directly to fortran arrays, but do it incorrectly.

Here is a log that can be used as a testcase
1> cat main.F
      program test
      integer myarr(10)
      data myarr /1,2,3,4,5,6,7,8,9,0/
      print *, myarr(1)
      end
>How-To-Repeat:
$/gcc/v4.1.2/bin/gfortran -g main.F
$/gdb/v6.6/bin/gdb ./a.out
(gdb) b main.F:4
Breakpoint 1 at 0x8048569: file main.F, line 4.
(gdb) run
Starting program: /home/satyag/test/gf/a.out
Breakpoint 1, MAIN__ () at main.F:4
4             print *, myarr(1)
Current language:  auto; currently fortran
(gdb) p myarr(1)
$1 = 2
(gdb) quit
The program is running.  Exit anyway? (y or n) y
$gcc/v3.2.3/bin/g77  -g main.F
$gdb/v6.6/bin/gdb ./a.out
(gdb)  b main.F:4
Breakpoint 1 at 0x8048806: file main.F, line 4.
(gdb) run
Starting program: /home/satyag/test/gf/a.out

Breakpoint 1, MAIN__ () at main.F:4
4             print *, myarr(1)
Current language:  auto; currently fortran
(gdb) p myarr(1)
$1 = 1
(gdb) quit
The program is running.  Exit anyway? (y or n) y



>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: