Crash when stopping not accepted file transfer.

[gy-lehel]

ii pidgin 1:3.0.0~collab-0.20620+20160415 amd64 graphical multi-protocol instant messaging client for X ii pidgin-data 1:3.0.0~collab-0.20620+20160415 all multi-protocol instant messaging client - data files ii pidgin-dbg 1:3.0.0~collab-0.20620+20160415 amd64 Debugging symbols for Pidgin un pidgin-facebookchat (no description available) ii pidgin-gnome-keyring 2.0~trusty-1 amd64 integrates pidgin (and libpurple) with the system keyring ii pidgin-otr 4.0.0-2 amd64 Off-the-Record Messaging plugin for Pidgin rc pidgin-ppa 0.0.9 all Pidgin PPA ii pidgin-sipe 1.20.1+collab-201604140748+3197 amd64 Pidgin plugin for MS Office Communicator and MS Lync ii pidgin-sipe-dbg 1.20.1+collab-201604140748+3197 amd64 Pidgin plugin for MS Office Communicator and MS Lync (debug symbols)

(gdb) where
#0  0x00007f9e59d490db in ft_cancelled (xfer=0x561e33a76b20) at purple-ft.c:196
#1  0x00007f9e7163f8ad in purple_xfer_cancel_local (xfer=0x561e33a76b20) at xfer.c:1761
#2  0x00007f9e71c2f5e7 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3  0x00007f9e71c48088 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4  0x00007f9e71c48ce2 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007f9e72efc7e8 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#6  0x00007f9e71c2f5e7 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007f9e71c48088 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007f9e71c48ce2 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007f9e72efb6a1 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#10 0x00007f9e72fc6d3e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#11 0x00007f9e71c2f5e7 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f9e71c48088 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007f9e71c48ce2 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007f9e730ef974 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#15 0x00007f9e72fc508c in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#16 0x00007f9e72fc691a in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#17 0x00007f9e72bcac22 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#18 0x00007f9e76d82e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f9e76d83048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f9e76d8330a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f9e72fc5e25 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#22 0x00007f9e7710a0e5 in pidgin_start (argc=1, argv=0x7ffc0e300c78) at libpidgin.c:850
#23 0x00007f9e76778ec5 in __libc_start_main (main=0x561e31a46960 <main>, argc=1, argv=0x7ffc0e300c78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc0e300c68) at libc-start.c:287
#24 0x0000561e31a469de in _start ()

[xhaakon]

I couldn't reproduce this crash on latest PPA version using these steps:

1. Start sending a file to a person in contact list
2. Wait until the remote client pops up an incoming file transfer notification
3. Select the transfer in local Pidgin's File Transfers dialog and click Stop; the button changes to Remove
4. Click Remove; the transfer is deleted from the dialog

I didn't make any significant delays between the steps. The remote client is UCCAPI/15.0.4659.1001 OC/15.0.4659.1001 (Microsoft Lync).

[xhaakon]

I tried to induce this crash several times during this month, but wasn't able to on recent pidgin-sipe versions. For now, I'm closing this as unreproducible.

If you're still seeing the bug and can provide us with more detailed scenario that leads to the crash, feel free to reopen.