#1591 SIGSEGV in xchat_get_info

[Alex Muntada]

I've been using bip IRC proxy and xchat as IRC client and sometimes xchat crashes (not always, in fact after a crash it never crashes again). Maybe it's the backlog of messages that bip sends to xchat that makes it crash, I can't figure it so far.

So, today I compiled xchat with debug symbols and got it running under gdb, so here's the backtrace:

$ gdb /usr/bin/xchat
GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7
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Reading symbols from /usr/bin/xchat...done.
(gdb) run
Starting program: /usr/bin/xchat
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffed52a700 (LWP 6941)]
[New Thread 0x7fffe7fff700 (LWP 6942)]
[New Thread 0x7fffe548a700 (LWP 6943)]
[New Thread 0x7fffe4c89700 (LWP 6944)]
[New Thread 0x7fffd7fff700 (LWP 6945)]
[New Thread 0x7fffd63d0700 (LWP 6964)]
[Thread 0x7fffd7fff700 (LWP 6945) exited]

Program received signal SIGSEGV, Segmentation fault.
0x000000000046b633 in xchat_get_info (ph=0x0, id=0x492b70 "win_status") at plugin.c:1008

(gdb) bt
#0  0x000000000046b633 in xchat_get_info (ph=0x0, id=0x492b70 "win_status") at plugin.c:1008
#1  0x0000000000435873 in tray_get_window_status () at plugin-tray.c:68
#2  0x0000000000436134 in tray_set_flash (icon=0x77e990) at plugin-tray.c:364
#3  0x0000000000436269 in fe_tray_set_icon (icon=FE_ICON_MESSAGE) at plugin-tray.c:408
#4  0x000000000047683b in text_emit (index=16, sess=0xeb4140, a=0x7fffffffc730 "NaTx1",
    b=0x791388 "08:58:27> bon dia!", c=0x7fffffffc620 "", d=0x7fffffffc630 "") at text.c:2054
#5  0x000000000045a1eb in inbound_chanmsg (serv=0x791050, sess=0xeb4140, chan=0x7fffffffca99 "#sudoersbcn",
    from=0x7fffffffc730 "NaTx1", text=0x791388 "08:58:27> bon dia!", fromme=0 '\000', id=0) at inbound.c:453
#6  0x00000000004839c5 in process_named_msg (sess=0xeb4140, type=0x7fffffffca91 "PRIVMSG",
    word=0x7fffffffc860, word_eol=0x7fffffffc970) at proto-irc.c:1088
#7  0x000000000048413e in irc_inline (serv=0x791050,
    buf=0x791362 ":NaTx1!bip@b.i.p PRIVMSG #sudoersbcn :08:58:27> bon dia!", len=56) at proto-irc.c:1249
#8  0x000000000046d0d4 in server_inline (serv=0x791050,
    line=0x791362 ":NaTx1!bip@b.i.p PRIVMSG #sudoersbcn :08:58:27> bon dia!", len=56) at server.c:396
#9  0x000000000046d32b in server_read (source=0xe64910, condition=G_IO_IN, serv=0x791050) at server.c:461
#10 0x00007ffff59c0ce5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff59c1048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007ffff59c130a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007ffff76b8447 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#14 0x000000000041d7da in fe_main () at fe-gtk.c:290
#15 0x000000000047c4c5 in main (argc=1, argv=0x7fffffffd818) at xchat.c:922
(gdb)

Let me know if I can provide further information.