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* [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string.
@ 2009-04-17 1:45 david dot sagan at gmail dot com
2009-04-17 4:40 ` [Bug fortran/39791] " burnus at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: david dot sagan at gmail dot com @ 2009-04-17 1:45 UTC (permalink / raw)
To: gcc-bugs
A simple example shows the problem:
program test
implicit none
integer i
character(16) abc
abc = "abc"
i = 7
end program
Compile with:
gfortran -g -O0 test.f90
Run with gdb and "whatis abc" produces:
type = character(kind=1) (16)
That is, gdb thinks that the variable abc is an array of length 16 with each
component in the array being a singe character. I verified with the totalview
debugger that the problem was with the compiler and not gdb. Interestingly
enough, version 4.1.1 does *not* have this problem. This bug definitely makes
debugging a program more painful.
--
Summary: Bad Dwarf debug information from gfortran for a
character string.
Product: gcc
Version: 4.3.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: david dot sagan at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/39791] Bad Dwarf debug information from gfortran for a character string.
2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
@ 2009-04-17 4:40 ` burnus at gcc dot gnu dot org
2009-04-21 17:45 ` [Bug fortran/39791] [4.3 Regression] " pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: burnus at gcc dot gnu dot org @ 2009-04-17 4:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from burnus at gcc dot gnu dot org 2009-04-17 04:40 -------
I think this was recently fixed. At least with GCC 4.4.0 20090414 and with the
latest 4.5 trunk:
(gdb) pt abc
type = character*16
(gdb) p abc
$1 = 'abc', ' ' <repeats 13 times>
I can reproduce the problem with gfortran 4.3.x
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/39791] [4.3 Regression] Bad Dwarf debug information from gfortran for a character string.
2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
2009-04-17 4:40 ` [Bug fortran/39791] " burnus at gcc dot gnu dot org
@ 2009-04-21 17:45 ` pinskia at gcc dot gnu dot org
2009-04-22 13:35 ` rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2009-04-21 17:45 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Summary|Bad Dwarf debug information |[4.3 Regression] Bad Dwarf
|from gfortran for a |debug information from
|character string. |gfortran for a character
| |string.
Target Milestone|--- |4.3.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/39791] [4.3 Regression] Bad Dwarf debug information from gfortran for a character string.
2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
2009-04-17 4:40 ` [Bug fortran/39791] " burnus at gcc dot gnu dot org
2009-04-21 17:45 ` [Bug fortran/39791] [4.3 Regression] " pinskia at gcc dot gnu dot org
@ 2009-04-22 13:35 ` rguenth at gcc dot gnu dot org
2009-04-24 7:19 ` burnus at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-04-22 13:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2009-04-22 13:35 -------
Fortran, P4. Confirmed as of comment #1.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Known to fail| |4.3.3
Known to work| |4.1.1 4.4.0
Priority|P3 |P4
Last reconfirmed|0000-00-00 00:00:00 |2009-04-22 13:35:09
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/39791] [4.3 Regression] Bad Dwarf debug information from gfortran for a character string.
2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
` (2 preceding siblings ...)
2009-04-22 13:35 ` rguenth at gcc dot gnu dot org
@ 2009-04-24 7:19 ` burnus at gcc dot gnu dot org
2009-04-24 7:25 ` burnus at gcc dot gnu dot org
2009-05-11 9:17 ` burnus at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: burnus at gcc dot gnu dot org @ 2009-04-24 7:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from burnus at gcc dot gnu dot org 2009-04-24 07:19 -------
Subject: Bug 39791
Author: burnus
Date: Fri Apr 24 07:19:12 2009
New Revision: 146672
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146672
Log:
2009-04-24 Tobias Burnus <burnus@net-b.de>
PR fortran/39791
Backport from mainline:
2008-08-22 Jakub Jelinek <jakub@redhat.com>
* dwarf2out.c (add_subscript_info): Stop on Fortran
* TYPE_STRING_FLAG
types.
(gen_array_type_die): Emit DW_TAG_string_type for Fortran
character types.
Modified:
branches/gcc-4_3-branch/gcc/ChangeLog
branches/gcc-4_3-branch/gcc/dwarf2out.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/39791] [4.3 Regression] Bad Dwarf debug information from gfortran for a character string.
2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
` (3 preceding siblings ...)
2009-04-24 7:19 ` burnus at gcc dot gnu dot org
@ 2009-04-24 7:25 ` burnus at gcc dot gnu dot org
2009-05-11 9:17 ` burnus at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: burnus at gcc dot gnu dot org @ 2009-04-24 7:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from burnus at gcc dot gnu dot org 2009-04-24 07:25 -------
FIXED for 4.3.4. The original patch for the 4.4 trunk was
http://gcc.gnu.org/ml/gcc-patches/2008-08/msg01700.html
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug fortran/39791] [4.3 Regression] Bad Dwarf debug information from gfortran for a character string.
2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
` (4 preceding siblings ...)
2009-04-24 7:25 ` burnus at gcc dot gnu dot org
@ 2009-05-11 9:17 ` burnus at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: burnus at gcc dot gnu dot org @ 2009-05-11 9:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from burnus at gcc dot gnu dot org 2009-05-11 09:17 -------
The patch caused a regression, see PR 40061
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39791
^ permalink raw reply [flat|nested] 7+ messages in thread
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2009-04-17 1:45 [Bug fortran/39791] New: Bad Dwarf debug information from gfortran for a character string david dot sagan at gmail dot com
2009-04-17 4:40 ` [Bug fortran/39791] " burnus at gcc dot gnu dot org
2009-04-21 17:45 ` [Bug fortran/39791] [4.3 Regression] " pinskia at gcc dot gnu dot org
2009-04-22 13:35 ` rguenth at gcc dot gnu dot org
2009-04-24 7:19 ` burnus at gcc dot gnu dot org
2009-04-24 7:25 ` burnus at gcc dot gnu dot org
2009-05-11 9:17 ` burnus at gcc dot gnu dot org
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