Re: (fwd) Bug#345739: Multiple segfaults when resizing the terminal

[Karl Berry]

Hi Loic,

    +  * Fix segfault when resizing the terminal rapidly by checking more 
carefully
    +    whether the display line is set prior to refering to it.
    +    [info/display.c:display_update_one_window]

Thanks for sending in this change (and thanks, Norbert, for passing it
on, since otherwise I would never have learned about it).  The patch is
certainly sensible, and I've installed it.

As for the remaining problem:

 occasional segfault when rapidly resizing, with a weird value of entry:
 ...
 I'm afraid some corruption happens or unintialized memory is used, and
 I suggest you run info in valgrind.

1) Unfortunately, I can't resize my window rapidly enough to make the
   crash happen.

2) Unfortunately again, I'm not set up to run valgrind, nor can I make
   it (and analyzing the results) a priority.

3) If you or anyone are able to use valgrind or other tools to detect
   such memory problems, that would be great.  I am not surprised that
   rapid window resizes (and consequent signal handling) are not 100%
   robust.  That code was written many, many years ago, and this is one
   of the many areas where standards committees have promulgated many changes.

Thanks again for the patch.

Karl