The D-Bus specification

Bugs and feature requests for the reference message bus daemon (dbus-daemon)

dbus-launch, dbus-monitor, dbus-send and other ancillary tools

Issues involving the Containers1 interface

Issues involving dbus.service and dbus.socket

Microsoft Visual C++ compiler

Issues involving the SELinux LSM on Linux

Issues involving the AppArmor LSM on Linux

The reference D-Bus shared library

Bugs involving automated test failures

Some issues seem easy to solve, but are not. This is unlikely to be a good starting point for new contributors.

Continuous integration issues (Gitlab-CI, Travis-CI, Appveyor)

Issues involving the Cygwin Unix-emulation runtime on Windows

Deprecated functionality, features that might be removed, platform support that might be dropped

FreeBSD and closely related OSs

gcc compilers that produce native Windows executables targeting MSVCRT

MSYS2 Unix-emulation environment on Windows

You had a problem, so you solved it with threads, and two now problem you (Segmentation fault, core dumped.)