bug#28346: 24.5; Emacs hangs when terminal becomes smaller than set margin

[Eli Zaretskii]

> From: yorwba <yorwb4@gmail.com>
> Date: Mon, 4 Sep 2017 23:43:23 +0800
> 
> On 09/04/2017 11:32 PM, Eli Zaretskii wrote:
> > Thanks, but please also show the C backtrace from the place where
> > Emacs hangs, it's an important part of the problem.
> 
> (gdb) bt full
> #0  0x000000000044bed8 in move_it_vertically_backward 
> (it=it@entry=0x7ffe46795eb0, dy=<optimized out>, dy@entry=19) at xdisp.c:9563
>         target_y = 20
>         y0 = <optimized out>
>         y1 = <optimized out>
>         line_height = 1
>         nlines = <optimized out>
>         h = <optimized out>
>         it2 =

Thanks.  I can reproduce this in Emacs 24, but not in Emacs 25.2, the
latest releases version, nor on the current master branch of what will
become Emacs 26.1.  So I guess this bug was already fixed.

Thank you for taking time to report all the details.