Providing the LocalPlayer:GetFriendsOnline({num}) method with a negative integer results in an unexpected crash

[byc14 (byc)]

Description:
If the LocalPlayer:GetFriendsOnline({num}) method is provided a negative integer, it’ll trigger an unexpected crash.

Lua:

game:GetService("Players").LocalPlayer:GetFriendsOnline(-1)

Result:

Solution:
Implement proper error handling, validate the integer is above 0 and less than 201.

Impact:
Annoying bug, crashes the client. If you accidentally provide a negative integer, it’ll crash your players in production.

It’s also possible to upload a plugin containing the above Lua, which will result in an unexpected crash until the user uninstalls the plugin.

Result:

Place: test - Roblox

[Kullaske]

Just a heads up, the repo place that you provided is private.

[byc14 (byc)]

My bad, it’s public now. Thank you.

[byc14 (byc)]

Between when the bug was initially reported and now, the behaviour has changed. Providing the method with a negative integer or an integer above 200 does not crash the client.

Thanks!