bug#62571: 30.0.50; Crash on entering 20x enlarged number

[Stefan Kangas <stefankangas@gmail.com>]

Po Lu <luangruo@yahoo.com> writes:

> Jean Louis <bugs@gnu.support> writes:
>
>> Here is how to reproduce:
>>
>> 1. emacs -Q
>> 2. C-x + and repeat pressing + for 20 times in total
>> 3. I press 6, as I wanted to show to child how number 6 looks like
>> 4. X Server crashed, I guess Emacs too, I have no idea
>>
>> I did not test it with other numbers but 6, but it can easily be that X
>> Window server will crash with letters as well.
>>
>> It is very repeatable. I am using Lucid built. Font used by default is
>> here below, if that matter.
>> Windowing system distributor 'The X.Org Foundation', version 11.0.12101006
>
> Xorg should print its crashes to a log typically at /var/log/Xorg.N.log,
> where N is the number of your display.
>
> Such a crash message should contain its backtrace on GNU/Linux systems,
> for example:
>
> [ 14866.219]
> Backtrace:
> [ 14866.219] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80b190b]
> [ 14866.219] 1: /usr/bin/X (0x8048000+0x6202d) [0x80aa02d]
> [ 14866.219] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb789140c]
> [ 14866.219] 16: /usr/bin/X (WriteToClient+0x15e) [0x80aac6e]
> [ 14866.219] 17: /usr/bin/X (WriteEventsToClient+0x2be) [0x80929ae]
> [ 14866.219] 18: /usr/bin/X (TryClientEvents+0xe2) [0x8095462]
> [ 14866.219] 19: /usr/bin/X (DeliverEventsToWindow+0x390) [0x8098450]
> [ 14866.219] 20: /usr/bin/X (DeliverEvents+0xf8) [0x8099018]
> [ 14866.219] 21: /usr/bin/X (DeleteWindow+0x203) [0x8076b43]
> [ 14866.219] 22: /usr/bin/X (FreeClientResources+0xed) [0x806389d]
> [ 14866.219] 23: /usr/bin/X (CloseDownClient+0x69) [0x80659e9]
> [ 14866.219] 24: /usr/bin/X (CheckConnections+0x137) [0x80a8987]
> [ 14866.219] 25: /usr/bin/X (WaitForSomething+0x98c) [0x80a33ac]
> [ 14866.220] 26: /usr/bin/X (0x8048000+0x2261e) [0x806a61e]
> [ 14866.220] 27: /usr/bin/X (0x8048000+0x1a5ba) [0x80625ba]
> [ 14866.220] 28: /lib/libc.so.6 (__libc_start_main+0xe7) [0xb75b5ce7]
> [ 14866.220] 29: /usr/bin/X (0x8048000+0x1a191) [0x8062191]
> [ 14866.220] Segmentation fault at address 0x1
> [ 14866.220]
> Caught signal 11 (Segmentation fault). Server aborting
>
> Typically, the DDX symbols printed are enough to give us an idea of what
> has gone wrong.  Would you please try to obtain such a backtrace from
> your X server crash?

Ping.  Could you please try obtaining a backtrace?