[Xcb] [Bug 45776] all X programs hanging in libxcb on GNU/kFreeBSD

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=45776

--- Comment #8 from Julien Cristau <jcristau at debian.org> 2012-02-08 13:06:34 PST ---
(In reply to comment #5)
> (In reply to comment #4)
> > I looked up the description of MSG_WAITALL in the recv manpage:
> [...]
> > This seems entirely wrong for these calls to recv.  Passing MSG_WAITALL
> > suggests that we don't want the OS to return until it has filled the entire
> > input buffer, whereas we clearly want the OS to return as soon as it has an X
> > response for us. 
> 
> That's only true for _xcb_in_read() (which I totally missed, whoops).
> read_block() would loop until it has read as much data as was asked for anyway.
> 
well yes, but as you say read_block() does the looping itself anyway, so the
MSG_WAITALL, while not as broken as in _xcb_in_read, is also useless.

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