Bug#1008890: libx11-6: XOpenDisplay segfaults if passed invalid display name

[Simon McVittie <smcv@debian.org>]

Package: libx11-6
Version: 2:1.7.4-1
Severity: normal
Tags: patch upstream
Forwarded: https://gitlab.freedesktop.org/xorg/lib/libx11/-/issues/155

Since upgrading to 1.7.4, XOpenDisplay("this is invalid") segfaults.
This causes a FTBFS in GTK 3 (possibly also GTK 2 and GTK 4, I haven't
tried those yet), because GTK has a test-case asserting that GTK
initialization behaves correctly when XOpenDisplay() is made to fail,
which it does by specifying an invalid DISPLAY.

Please consider the patch that is available here:
https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/128

Thanks,
    smcv

-- System Information:
Debian Release: bookworm/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-security'), (500, 'oldstable-debug'), (500, 'oldoldstable'), (500, 'buildd-unstable'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (500, 'oldstable'), (1, 'experimental-debug'), (1, 'buildd-experimental'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.16.0-6-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libx11-6 depends on:
ii  libc6        2.33-7
ii  libx11-data  2:1.7.4-1
ii  libxcb1      1.14-3

libx11-6 recommends no packages.

libx11-6 suggests no packages.

-- no debconf information