The bug

Some parameters are not validated and this can lead to a crash. This bug report is meant to list all those cases.

Invalid range

Parameter	Value	Result
noise.size_horizontal noise.size_vertical	0	Divide by zero crash-2020-05-21_21.32.22-client.txt
noise.size_horizontal noise.size_vertical	< 0	Negative array size crash-2020-05-22_16.09.23-server.txt
noise.height	< 1	Bound must be positive crash-2020-05-22_15.41.08-server.txt
noise.height	> 256	Index out of bounds crash-2020-05-22_15.46.11-server.txt
structures.*.spacing	0	Divide by zero crash-2020-05-22_16.41.13-server.txt

Other

Condition	Result
structures.*.spacing <= separation	Bound must be positive crash-2020-05-22_22.35.48-server.txt
noise.height < 9 and not a void biome	Bound must be positive crash-2020-05-22_21.42.07-server.txt
Unknown (related to spacing)	String index out of range crash-2020-05-29_15.15.05-client.txt Reproduce: string_index_range.json

_{This list is incomplete. Please help by commenting and attaching a crash report.}