Nat Brown (Apple)

suspect but not certain that this is crashing because glfw is assuming the type of some IOHIDDeviceGetProperty requests in glfw/src/cocoa_joystick.m and calling CFStringGetCString(), CFNumberGetValue(), and IOHIDValueGetIntegerValue() on CFTypeRef and CFValueRef objects of the wrong type. places such as https://github.com/glfw/glfw/blob/33cd8b865d9289cfbcf3d95e6e68e4050b94fcd3/src/cocoa_joystick.m#L146-L155 might be better written as:

if (property && CFGetTypeID(property) == CFStringGetTypeID()) { ... }

and similarly

if (property && CFGetTypeID(property) == CFNumberGetTypeID())
        CFNumberGetValue(property, kCFNumberSInt32Type, &vendor);

Can you share the Apple Feedback ID you created for this issue? My team supports game controllers at Apple and would like to track this issue down.