closing this rather old issue. sorry for not addressing this earlier.
Please could you recheck with the recent 14.04 LTS or 14.10 releases and
reopen the issue if the problem persists?
** Changed in: gdb (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/609666
Title:
gcore produces the broken core bt in GDB displays backtrace
abnormally.
Status in “gdb” package in Ubuntu:
Invalid
Bug description:
Binary package hint: gdb
gcore, a subcommand in GDB providing the feature of producing a core
dump for currently running processes, produces a broken core dump when
the target program sleeps.
Step to reproduce:
$ cd /tmp
$ gcc -x c - -o loop
#include <unistd.h>
main(){for(;;)sleep(1);}
$ ./loop &
[1] 3598
$ gcore 3598
0x00007f78bb59e370 in nanosleep () from /lib/libc.so.6
Saved corefile core.3598
$ gdb loop core.3598
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 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-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /tmp/loop...(no debugging symbols found)...done.
[New Thread 3598]
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols
found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `/tmp/loop'.
#0 0x00007f78bb59e370 in ?? ()
(gdb) bt
#0 0x00007f78bb59e370 in ?? ()
#1 0x00007f78bb59e200 in ?? ()
#2 0x0000000000000000 in ?? ()
(gdb)
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gdb 7.1-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.32-24.38-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
Architecture: amd64
Date: Sun Jul 25 14:50:14 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcEnviron:
PATH=(custom, user)
LANG=ja_JP.utf8
SHELL=/bin/bash
SourcePackage: gdb
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