[1.17] ArrayIndexOutOfBoundsException when descending below approximately -2.1 million Y

[andrewathalye]

Version Information

Minecraft version: 1.17 (21w14a)
Forge version: (N/A, Fabric Loader 0.11.3)
Other mods (if applicable): Fabric API 0.32.7+1.17

Steps to reproduce:

1. Load into a new world
2. Teleport beneath approximately -2.1 million on the Y axis
3. Observe an ArrayIndexOutOfBoundsException in the generated crash log.

Expected Behavior:
The cube would load.

Actual Behavior:
After attempting to load the cube for a bit the game crashes, apparently due to an issue with Aquifer water level calculations.

Link to crash log (if applicable - use a site such as hastebin: https://paste.ee/p/GvANh

[CorgiTaco]

Could you repost the log again but as a comment in place of of a paste.ee, the link for it expired. And this most likely occurred bc blockpos packing isnt working in cubic chunks to allow a position so deep.

[andrewathalye]

As far as I can tell the link I sent still works (just checked), but I'll attach the log file here directly just in case (for the debug version only). It's definitely possible that blockpos packing is involved, but I was curious since I've tried this before in 1.16 and not gotten any crashes - the log seems to point to a new worldgen feature causing issues.
Dev.txt

[BelgianSalamander]

This should be fixed in #84.