"aptitude changelog heroes" crashes

[Vassilis Pandis]

On current edgy with aptitude 0.4.1-1.1ubuntu3, |"aptitude changelog
heroes" crashes. This is on x86.

pandis@pandis-laptop:~$ gdb aptitude
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This GDB was configured as "i486-linux-gnu"...Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".

(gdb) handle SIG33 pass nostop noprint
Signal Stop Print Pass to program Description
SIG33 No No Yes Real-time event 33
(gdb) set pagination 0
(gdb) run changelog heroes
Starting program: /usr/bin/aptitude changelog heroes
[Thread debugging using libthread_db enabled]
[New Thread -1212385616 (LWP 14548)]
[New Thread -1254208608 (LWP 14552)]
No candidate version found for heroes

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1212385616 (LWP 14548)]
cmdline_do_download (m=0x0) at cmdline_util.cc:168
168 if(!m->prepare(progress, *log.get(), log.get()))
(gdb) bt
#0 cmdline_do_download (m=0x0) at cmdline_util.cc:168
#1 0x081293da in do_cmdline_changelog (packages=@0xbfeea478) at cmdline_changelog.cc:257
#2 0x08129f30 in cmdline_changelog (argc=2, argv=0xbfeea768) at cmdline_changelog.cc:342
#3 0x08053e52 in main (argc=2, argv=0xbfeea764) at main.cc:489
(gdb) bt thread apply all
No symbol "thread" in current context.
(gdb) thread apply all bt

Thread 2 (Thread -1254208608 (LWP 14552)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7e1dfde in __lll_mutex_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7e1945a in _L_mutex_lock_1239 () from /lib/tls/i686/cmov/libpthread.so.0
#3 0xb53e44b0 in ?? ()
#4 0x00000000 in ?? ()

Thread 1 (Thread -1212385616 (LWP 14548)):
#0 cmdline_do_download (m=0x0) at cmdline_util.cc:168
#1 0x081293da in do_cmdline_changelog (packages=@0xbfeea478) at cmdline_changelog.cc:257
#2 0x08129f30 in cmdline_changelog (argc=2, argv=0xbfeea768) at cmdline_changelog.cc:342
#3 0x08053e52 in main (argc=2, argv=0xbfeea764) at main.cc:489
(gdb)

[Simon Law (sfllaw)]

That null pointer is obviously a bug.

[Michael Vogt (mvo)]

Thanks for your bugreport.

I commited a patch to the ubuntu patckage and will fix it with next upload (and send the patch upstream).

Cheers,
 Michael