creating and immediately destroying an SDL window crashes gnome-shell with signal 5

[Anders Kaseorg]

Running this Python script (requires python-sdl2 or python3-sdl2) immediately crashes gnome-shell.

import sdl2
sdl2.SDL_Init(0)
window = sdl2.SDL_CreateWindow(
    b'Hello, world!',
    sdl2.SDL_WINDOWPOS_UNDEFINED, sdl2.SDL_WINDOWPOS_UNDEFINED,
    640, 480, 0)
sdl2.SDL_DestroyWindow(window)
sdl2.SDL_Quit()

If gnome-shell was run from a terminal, its console output is

(gnome-shell:10965): Gdk-ERROR **: The program 'gnome-shell' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 3567 error_code 3 request_code 18 (core protocol) minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
Trace/breakpoint trap (core dumped)

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Wed Oct 11 00:56:53 2017
DisplayManager: gdm3
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2016-02-19 (599 days ago)
InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160218)
ProcCmdline: /usr/bin/gnome-shell
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 () at /usr/lib/x86_64-linux-gnu/libX11.so.6
 () at /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
 XIGetClientPointer () at /usr/lib/x86_64-linux-gnu/libXi.so.6
 () at /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
Title: gnome-shell crashed with signal 5
UpgradeStatus: Upgraded to artful on 2017-05-02 (161 days ago)
UserGroups: adm audio bumblebee cdrom dip docker libvirt libvirtd lpadmin mock plugdev sambashare sbuild sudo wireshark

[Anders Kaseorg (andersk)]

I tried to debug this with GDK_SYNCHRONIZE=1, but that makes the crash disappear.

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1701289, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.