[debbugs-tracker] bug#28172: closed (26.0.50; division by zero in x_draw_underwave)

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Your message dated Mon, 21 Aug 2017 19:29:54 +0200
with message-id <address@hidden>
and subject line Fixed
has caused the debbugs.gnu.org bug report #28172,
regarding 26.0.50; division by zero in x_draw_underwave
to be marked as done.

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28172: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28172
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> --- Begin Message ---
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> Subject: 
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> 26.0.50; division by zero in x_draw_underwave
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> Date: 
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> Mon, 21 Aug 2017 16:09:00 +0200
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> User-agent: 
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> mu4e 0.9.19; emacs 26.0.50
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>
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>
> Emacs 26 (lucid, from master) here, I get a division by zero when
> activating flyspell underlining, happening at:
>
> Thread 1 "emacs" received signal SIGFPE, Arithmetic exception.
> 0x00000000005181a3 in x_draw_underwave (s=0x7fffffffbe20) at xterm.c:3541
> 3541      x1 = x0 - (x0 % dx);
> (gdb) where
> #0  0x00000000005181a3 in x_draw_underwave (s=0x7fffffffbe20) at xterm.c:3541
> #1  0x0000000000518877 in x_draw_glyph_string (s=0x7fffffffbe20) at xterm.c:3685
> #2 0x00000000004805d4 in draw_glyphs (w=0x148dc30 <bss_sbrk_buffer+8070032>,
> x=233, row=0x2eda080, area=TEXT_AREA, start=7, end=26, hl=DRAW_NORMAL_TEXT,
> overlaps=0) at xdisp.c:26595
> (gdb) p dx
> $1 = 0
>
> I guess this was introduced in the recent HiDPI support for wave
> underlines. Let me know if you need additional details about the monitor
> configuration (laptop with an external display).
>
>
> In GNU Emacs 26.0.50 (build 2, x86_64-pc-linux-gnu, X toolkit, Xaw scroll bars)
>  of 2017-08-21 built on eab17048nb
> Repository revision: 807b67faa403a2c2f65666c28f74ea1989451ad1
> Windowing system distributor 'The X.Org Foundation', version 11.0.11903000
> System Description:     Debian GNU/Linux unstable (sid)
>
> Configured using:
>  'configure --with-x-toolkit=lucid --with-modules --without-gsettings
>  CC=gcc 'CFLAGS=-O3 -march=native -pipe ' LDFLAGS='
>
> Configured features:
> XPM JPEG TIFF GIF PNG RSVG SOUND DBUS NOTIFY ACL LIBSELINUX GNUTLS
> LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS LUCID X11
> MODULES LIBSYSTEMD
>
> Important settings:
>   value of $LC_COLLATE: C
>   value of $LC_TIME: en_DK.UTF-8
>   value of $LANG: en_US.UTF-8
>   locale-coding-system: utf-8-unix
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> --- End Message ---
> --- Begin Message ---
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> Subject: 
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> Fixed
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> Date: 
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> Mon, 21 Aug 2017 19:29:54 +0200
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> User-agent: 
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> mu4e 0.9.19; emacs 26.0.50
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> Fixed in commit 76fbe2f4541b11af8bcb0b5e57bb155b796b8d8e
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> --- End Message ---