Style * Icon cause Fvwm3 stuck in loading when restart.

[llc0930]

Upfront Information

• Fvwm3 version
  fvwm3 1.0.5 (1.0.4-130-g4d646ca6) with support for: ReadLine, XPM, PNG, SVG, Shape, XShm, SM, Bidi text, XRandR, XRender, XCursor, XFT, NLS
• Linux distribution or BSD name/version
  Linux 5.18.0-3-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.18.14-1 (2022-07-23) x86_64 GNU/Linux
• Platform
  12th Gen Intel(R) Core(TM) i5-12500

Expected Behaviour

Restart normally.

Actual Behaviour

Stuck in loading.

Steps to Reproduce

• Reduce the problem to the smallest fvwm configuration example (where
  possible). Start with a blank config file (fvwm3 -f /dev/null) and go from
  there.

With testconfig:

1. Open a gui program and iconify it.
2. Restart Fvwm3, stuck in loading.

With normal config:

# Disable Icons from appearing on desktop.
# Comment this out or use Style * Icon to get the icons back.
Style * !Icon

1. Comment out.
   # Style * !Icon
2. Open a gui program and iconify it.
3. Restart Fvwm3, stuck in loading.

• Does the problem also happen with Fvwm2?
  I didn't try.
• Include your configuration with this issue.
  testconfig

Does Fvwm3 crash?

I didn't find any corefile.
Finally switch to tty to kill Fvwm3.

Extra Information

• Attach $HOME/.fvwm/fvwm3-output.log from the step above.
  With testconfig: fvwm3-output.log

[llc0930]

Actually, I didn't change it in my config, just curious why it happened, that's ok.

[ThomasAdam]

See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1016363

It's via X11's change here: https://gitlab.freedesktop.org/xorg/lib/libx11/-/issues/157

Some work has already been done in FVWM to help with this (5c17c83)