In-Game: [YYC] Null-coalescing operator on a struct variable that does not exist causes a crash in 2024.11 runtimes

[gm-bug-reporter]

Description

In the create event of an object, I can do this to safely set a default value for a variable I expect to be set by instance_create_whatever's last argument struct.

test = self[$ "test"] ?? 5;

When running in VM on Windows it works, but in YYC this will crash.

Steps To Reproduce

Run the attached project using VM and YYC. Observe that one works and the other crashes.

Which version of GameMaker are you reporting this issue for?

IDE v2024.11.0.179 Runtime v2024.11.0.227

Which operating system(s) are you seeing the problem on?

Windows 10.0.22621.0

Which platform(s) are you seeing the problem on?

Windows

ee23b05c-b62e-496f-adca-c44462e721d4

[rwkay]

Fixed in 2024.13

[alicemoretti]

Verified fixed on IDE v2024.1300.0.733 Runtime v2024.1300.0.744.
Thank you.