I have fixed similar issues in Allegro and SDL (which are libraries that cover a superset of GLFW's scope) because I do use UBSan in my projects. Unfortunately,

I have fixed similar issues in Allegro and SDL (which are libraries that cover a superset of GLFW's scope) because I do use UBSan in my projects. Unfortunately, I haven't used GLFW in any project yet, so I couldn't fix this one :) (the point on good defaults stays valid though)