LibX11/xcb fails to initialize something

[Brian Rogers]

Maarten Maathuis wrote:
> On Sat, Jan 31, 2009 at 7:37 PM, Brian Rogers <brian at xyzw.org> wrote:
>   
>> On Ubuntu Jaunty, Ekiga hangs during startup before it can open any windows.
>> I traced the issue back to an uninitialized condition variable in libX11 xcb
>> code. So to anyone with mysterious freezes, this may be the fix you need.
>> Especially if your backtrace looks like the following one:
>>
>> #0  0x00007fb79f38ca94 in __lll_lock_wait () from /lib/libpthread.so.0
>> #1  0x00007fb79f38a830 in pthread_cond_broadcast@@GLIBC_2.3.2 () from /lib/libpthread.so.0
>> #2  0x00007fb7a1f266b7 in wait_or_poll_for_event (dpy=0x10a6290, wait=<value optimized out>) at ../../src/xcb_io.c:141
>> #3  0x00007fb7a1f26a2d in process_responses (dpy=0x10a6e00, wait_for_first_event=1, current_error=0x0, current_request=0) at ../../src/xcb_io.c:166
>> #4  0x00007fb7a1f272e9 in _XReadEvents (dpy=0x10a6290) at ../../src/xcb_io.c:272
>> #5  0x00007fb7a1f05bd4 in XIfEvent (dpy=0x10a6290, event=0x7fffaa400690, predicate=0x7fb79dd02a70 <timestamp_predicate>, arg=0x2800004 <Address 0x2800004 #6  0x00007fb79dd02a39 in IA__gdk_x11_get_server_time (window=0x135a3f0) at /build/buildd/gtk+2.0-2.15.0/gdk/x11/gdkevents-x11.c:2598
>> #7  0x00007fb79e4782f8 in gtk_tray_icon_send_manager_message (icon=0x10d1340, message=0, window=<value optimized out>, data1=41943044, data2=0, data3=0)
>> #8  0x00007fb79e4785cf in gtk_tray_icon_realize (widget=0x10d1340) at /build/buildd/gtk+2.0-2.15.0/gtk/gtktrayicon-x11.c:629
>> #9  0x00007fb79d3f12cd in IA__g_closure_invoke (closure=0x108aa30, return_value=0x0, n_param_values=1, param_values=0x11d2280, invocation_hint=0x7fffaa4009e0)
> Was there supposed to be a patch or some other hint attached to this message?
>   
Sorry, I was trying out 'git send-email' for the first time (after 
sending a test-run to myself). It likes to post the patch as a separate 
mail and I wanted to write my own message separate from the commit 
message. Then I guess an anti-spam measure delayed delivery of the 
second e-mail. I'm attaching the patch here to make sure everyone can 
see it.

Also CC'ing Keith Packard because even though I specified him as a CC 
and the tool repeated a header showing both names I CC'd, it just 
silently dropped one of them. I'm going to be avoiding 'git 
format-patch' for a while now...

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