Integration tests fail with "VM error"

[maurolacy]

An integration test that queries a contract for a list of ids is failing with "VM error:".

Tried it in cosmwasm-plus (see branch https://github.com/CosmWasm/cosmwasm-plus/tree/atomic-swap-integ_test_query for PoC).

Reproduced also in coswasm, under the queue contract.

The errors are of the form:

thread 'test_query' panicked at 'VM error: CommunicationErr { source: InvalidRegion { source: LengthExceedsCapacity { length: 1931622946, capacity: 1919247470, backtrace: Backtrace(()) } } }', ...

,

thread 'query_list' panicked at 'VM error: CommunicationErr { source: RegionLengthTooBig { length: 1663187490, max_length: 65536, backtrace: Backtrace(()) } }', ...

The problem seems to be related to the use of cosmwasm-storage. Or, maybe, adding cosmwasm-storage as new dependency changed the versions of some packages, and that is what is triggering the error.

Creating this issue for tracking and documentation.

[ethanfrey]

I just gave you permission to push a branch. Can you please make a PR with the test showing the failure?

Good find and I hope to fix it shortly

[maurolacy]

PR: #509.

Tomorrow I'll continue testing. If I find something else I'll publish it here.

[webmaster128]

Nice find! This is most likely a bug in cosmwasm-std.