Bug with viewing menus

[Stephen J. Turnbull]

Asfand Yar Qazi writes:

 > I Held the mouse down on the menu item "Options", then dragged through
 > the menu items "Advanced" -> "Emacs" -> "Emacs"
 > 
 > Then I drag the mouse down rather fast down the options list.  Emacs
 > crashes, giving the output below.

Thanks for your report.  I believe the backtrace  more or less
pinpoints the problem, but I'm not an expert on error-trapping.  We
will get in touch if we need more information.

 > want the core file, please feel free to contact me).  Also, when I
 > manage to reproduce this bug, sometimes the lisp backtrace is
 > different

That's not surprising, because the code is being called asynchronously
from a handler for X events.