* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
@ 2011-08-10 15:54 ` john.t.kerich at nasa dot gov
2011-08-10 16:00 ` john.t.kerich at nasa dot gov
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-10 15:54 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
John T. Kerich <john.t.kerich at nasa dot gov> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |john.t.kerich at nasa dot
| |gov
--- Comment #2 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-10 15:53:40 UTC ---
#include <stdio.h>
static const int z = 128;
static int y = 128;
int main( int argc, char * argv [] )
{
int ret = 0;
printf( "%d\n", z );
return( ret );
}
g++ -c -I. -g -Wall testNeg.C -o testNeg.o
testNeg.C:4: warning: 'y' defined but not used
g++ -MM -I. -g -Wall testNeg.C > .deps/testNeg.d
g++ -o testNeg testNeg.o
(gdb) run
Starting program: /home/jkerich/CC_tools/testNeg
warning: no loadable sections found in added symbol-file system-supplied DSO at
0x2aaaaaaab000
128
Breakpoint 1, main (argc=1, argv=0x7fffffffe1b8) at testNeg.C:12
12 return( ret );
(gdb) print z
$1 = -128
(gdb) print y
$2 = -128
(gdb) quit
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
2011-08-10 15:54 ` [Bug c++/9580] printing negative values of constant values (with value 128-255) john.t.kerich at nasa dot gov
@ 2011-08-10 16:00 ` john.t.kerich at nasa dot gov
2011-08-10 16:04 ` tromey at redhat dot com
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-10 16:00 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
John T. Kerich <john.t.kerich at nasa dot gov> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|WORKSFORME |
--- Comment #3 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-10 15:59:53 UTC ---
This bug is still happening on our Linux 2.6.18-238.12.1.el5 #1 SMP Sat May 7
20:18:50 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux boxes using version 7.0.1
GNU gdb (GDB) Red Hat Enterprise Linux (7.0.1-32.el5_6.2)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
I have included test program, how I compiled it, debugger output and print
commands showing 128 being displayed as -128.
Please email if there is a fix. john.t.kerich@nasa.gov
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
2011-08-10 15:54 ` [Bug c++/9580] printing negative values of constant values (with value 128-255) john.t.kerich at nasa dot gov
2011-08-10 16:00 ` john.t.kerich at nasa dot gov
@ 2011-08-10 16:04 ` tromey at redhat dot com
2011-08-10 16:16 ` john.t.kerich at nasa dot gov
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: tromey at redhat dot com @ 2011-08-10 16:04 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #4 from Tom Tromey <tromey at redhat dot com> 2011-08-10 16:03:44 UTC ---
I can't reproduce on my F15 box.
It is possible that the problem is in the compiler.
The output from "readelf -wi" on the executable would help
diagnose that.
It is also possible that the bug was fixed in a more recent gdb.
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (2 preceding siblings ...)
2011-08-10 16:04 ` tromey at redhat dot com
@ 2011-08-10 16:16 ` john.t.kerich at nasa dot gov
2011-08-10 16:28 ` john.t.kerich at nasa dot gov
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-10 16:16 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #5 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-10 16:09:33 UTC ---
I ran the readelf -wi testNeg > testNeg_readelf.txt, see attached. Hope that
helps.
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: tromey at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Wednesday, August 10, 2011 12:04 PM
To: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Subject: [Bug c++/9580] printing negative values of constant values (with value
128-255)
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #4 from Tom Tromey <tromey at redhat dot com> 2011-08-10 16:03:44
UTC ---
I can't reproduce on my F15 box.
It is possible that the problem is in the compiler.
The output from "readelf -wi" on the executable would help
diagnose that.
It is also possible that the bug was fixed in a more recent gdb.
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (3 preceding siblings ...)
2011-08-10 16:16 ` john.t.kerich at nasa dot gov
@ 2011-08-10 16:28 ` john.t.kerich at nasa dot gov
2011-08-10 20:17 ` tromey at redhat dot com
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-10 16:28 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #6 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-10 16:15:35 UTC ---
P.S.
Compiling with the -gstabs+ fixes the problem, but there is a side effect in
valgrind tool. The file/line numbers that normally are printed out on the
stack list disappear, so we really don't want to use it because you need to see
the line numbers to know what valgrind is talking about. The other way is to
cast the variable for the gdb print command, ex. "print (int)y". It then prints
out 128 correctly, but then you need to know this is a const variable first.
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Sent: Wednesday, August 10, 2011 12:09 PM
To: 'tromey at redhat dot com'
Subject: RE: [Bug c++/9580] printing negative values of constant values (with
value 128-255)
I ran the readelf -wi testNeg > testNeg_readelf.txt, see attached. Hope that
helps.
John T. Kerich
Columbus Technologies and Services, Inc Nasa GSFC Building 13 Room 141 Cube 4
8800 Greenbelt Road Greenbelt, MD 20771 Tel. #: (301) 286-5138 Fax #: (301)
286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: tromey at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Wednesday, August 10, 2011 12:04 PM
To: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Subject: [Bug c++/9580] printing negative values of constant values (with value
128-255)
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #4 from Tom Tromey <tromey at redhat dot com> 2011-08-10 16:03:44
UTC --- I can't reproduce on my F15 box.
It is possible that the problem is in the compiler.
The output from "readelf -wi" on the executable would help diagnose that.
It is also possible that the bug was fixed in a more recent gdb.
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: ------- You are on the CC list for
the bug.
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (4 preceding siblings ...)
2011-08-10 16:28 ` john.t.kerich at nasa dot gov
@ 2011-08-10 20:17 ` tromey at redhat dot com
2011-08-11 12:22 ` john.t.kerich at nasa dot gov
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: tromey at redhat dot com @ 2011-08-10 20:17 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #7 from Tom Tromey <tromey at redhat dot com> 2011-08-10 19:31:24 UTC ---
The debuginfo looks fine to me.
Can you try a newer version of gdb?
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (5 preceding siblings ...)
2011-08-10 20:17 ` tromey at redhat dot com
@ 2011-08-11 12:22 ` john.t.kerich at nasa dot gov
2011-08-11 16:44 ` john.t.kerich at nasa dot gov
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-11 12:22 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #8 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-10 20:17:26 UTC ---
I will have to check with my SA, we only download from RedHat for RH 5.
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: tromey at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Wednesday, August 10, 2011 3:31 PM
To: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Subject: [Bug c++/9580] printing negative values of constant values (with value
128-255)
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #7 from Tom Tromey <tromey at redhat dot com> 2011-08-10 19:31:24
UTC ---
The debuginfo looks fine to me.
Can you try a newer version of gdb?
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (6 preceding siblings ...)
2011-08-11 12:22 ` john.t.kerich at nasa dot gov
@ 2011-08-11 16:44 ` john.t.kerich at nasa dot gov
2011-08-11 18:55 ` john.t.kerich at nasa dot gov
2011-08-18 16:18 ` jan.kratochvil at redhat dot com
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-11 16:44 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #9 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-11 16:10:06 UTC ---
We tried the test program on a sun sparc 2.6 OS and the bug did not happen so
it looks like it is related to the version of the RH OS we are running. Are SA
says there is a newer version of gdb 7.1? that Red Hat has and our SA is going
to install that today for us to try. I will let you know if there is any
change.
P.S.
We are 64 bit OS here. Could that have something to do with it?
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Sent: Wednesday, August 10, 2011 4:17 PM
To: 'tromey at redhat dot com'
Subject: RE: [Bug c++/9580] printing negative values of constant values (with
value 128-255)
I will have to check with my SA, we only download from RedHat for RH 5.
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: tromey at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Wednesday, August 10, 2011 3:31 PM
To: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Subject: [Bug c++/9580] printing negative values of constant values (with value
128-255)
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #7 from Tom Tromey <tromey at redhat dot com> 2011-08-10 19:31:24
UTC ---
The debuginfo looks fine to me.
Can you try a newer version of gdb?
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (7 preceding siblings ...)
2011-08-11 16:44 ` john.t.kerich at nasa dot gov
@ 2011-08-11 18:55 ` john.t.kerich at nasa dot gov
2011-08-18 16:18 ` jan.kratochvil at redhat dot com
9 siblings, 0 replies; 11+ messages in thread
From: john.t.kerich at nasa dot gov @ 2011-08-11 18:55 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #10 from John T. Kerich <john.t.kerich at nasa dot gov> 2011-08-11 16:48:57 UTC ---
My SA now says that gdb (gdb.x86_64 0:7.0.1-32.el5_6.2 ) is the current version
of Redhat 5.6 so I can't update.
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Sent: Thursday, August 11, 2011 12:09 PM
To: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC];
'tromey at redhat dot com'
Subject: RE: [Bug c++/9580] printing negative values of constant values (with
value 128-255)
We tried the test program on a sun sparc 2.6 OS and the bug did not happen so
it looks like it is related to the version of the RH OS we are running. Are SA
says there is a newer version of gdb 7.1? that Red Hat has and our SA is going
to install that today for us to try. I will let you know if there is any
change.
P.S.
We are 64 bit OS here. Could that have something to do with it?
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Sent: Wednesday, August 10, 2011 4:17 PM
To: 'tromey at redhat dot com'
Subject: RE: [Bug c++/9580] printing negative values of constant values (with
value 128-255)
I will have to check with my SA, we only download from RedHat for RH 5.
John T. Kerich
Columbus Technologies and Services, Inc
Nasa GSFC
Building 13 Room 141 Cube 4
8800 Greenbelt Road
Greenbelt, MD 20771
Tel. #: (301) 286-5138
Fax #: (301) 286-7475
Email: john.t.kerich@nasa.gov
-----Original Message-----
From: tromey at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Wednesday, August 10, 2011 3:31 PM
To: Kerich, John T. (GSFC-444.0)[COLUMBUS TECHNOLOGIES AND SERVICES INC]
Subject: [Bug c++/9580] printing negative values of constant values (with value
128-255)
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
--- Comment #7 from Tom Tromey <tromey at redhat dot com> 2011-08-10 19:31:24
UTC ---
The debuginfo looks fine to me.
Can you try a newer version of gdb?
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug c++/9580] printing negative values of constant values (with value 128-255)
[not found] <bug-9580-4717@http.sourceware.org/bugzilla/>
` (8 preceding siblings ...)
2011-08-11 18:55 ` john.t.kerich at nasa dot gov
@ 2011-08-18 16:18 ` jan.kratochvil at redhat dot com
9 siblings, 0 replies; 11+ messages in thread
From: jan.kratochvil at redhat dot com @ 2011-08-18 16:18 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=9580
Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
CC| |jan.kratochvil at redhat
| |dot com
Resolution| |WORKSFORME
--- Comment #11 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2011-08-18 12:52:40 UTC ---
FSF GDB has it fixed by:
commit 2f22c795e000ddecc31a0c31043781ec9dc400c3
Author: Tom Tromey <tromey@redhat.com>
Date: Wed Jul 28 20:05:00 2010 +0000
* dwarf2read.c (dwarf2_const_value_data): Never sign extend.
+/* Given an attr with a DW_FORM_dataN value in host byte order,
+ zero-extend it as appropriate for the symbol's type. The DWARF
+ standard (v4) is not entirely clear about the meaning of using
+ DW_FORM_dataN for a constant with a signed type, where the type is
+ wider than the data. The conclusion of a discussion on the DWARF
+ list was that this is unspecified. We choose to always zero-extend
+ because that is the interpretation long in use by GCC. */
FSF GDB bugtracker is not used for RHEL backporting.
Please file it to Red Hat RHEL Bugzilla if you wish a backport.
I can confirm this bug is present in:
RHEL-6.1 gdb-7.2-48.el6.x86_64
RHEL-5.6 gdb-7.0.1-32.el5_6.2.x86_64
--
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 11+ messages in thread