libxkbcommon/test/data/keymaps/divide-by-zero.xkb

xkb_keymap {
	xkb_keycodes {
		 <ESC> = 1 / 0;
	};

	xkb_types {
		virtual_modifiers NumLock;
	};

	xkb_compatibility {
		virtual_modifiers NumLock;
	};

	xkb_symbols {
		key <HYPR> {	[        NoSymbol,         Hyper_L ] };
	};
};