You can debug using command-line debuggers such as gdb, dbx, or lldb. If you prefer a graphic debugger, you can use an IDE or debugging frontend such as Qt Creator, CLion, or Eclipse.

Additional traps can be set on GLib by setting the G_DEBUG environment variable:

$ G_DEBUG=fatal_criticals gdb wireshark

If you’re encountering memory safety bugs, you might want to build with Address Sanitizer so that Wireshark will immediately alert you to any detected issues.

$ cmake .. -G Ninja -DENABLE_ASAN=1

See https://developer.gnome.org/glib/stable/glib-running.html

You can debug using the Visual Studio Debugger or WinDbg. See the section on using the Debugger Tools.