Re: xemacs beta build hangs on mac OSX Lion with 2.5.31 with no_pie patch applied

William Deegan writes: > Greetings, > > I grabbed a stack trace by attaching to the process with gdb -p PID > I've also included the log of the to the point it hangs (99% cpu forever.. left it running overnight one time). > Looks like it's hanging polling for some X event.. X.org was broken, and stayed that way for a long time. https://trac.macports.org/ticket/18491 http://bugs.freedesktop.org/show_bug.cgi?id=20048 I suspect this is more of the same, as on several occasions they claimed to have fixed this, but AFAIK they never fixed the real problem (which is that _XtWaitForSomething() is documented not to block, but it can block). MacPorts worked around it by configuring libXt to use select() instead of poll() in this function. If you can figure out where the POLLNVAL fd is coming from, or even just which one it is, I'd like to fix that part of XEmacs.