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Register storage-proof-size host function - #146
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The CLI registered only sp_io::SubstrateHostFunctions. Runtimes that use cumulus-pallet-weight-reclaim call the storage_proof_size host function during extrinsic dispatch. With execute-block or follow-chain, any block that contains a signed extrinsic then fails with: Execution aborted due to trap: call to a missing function env:ext_storage_proof_size_storage_proof_size_version_1 All current system-chain runtimes (polkadot-sdk and fellowship) use that pallet, so the two commands were unusable against them. Fix: register the cumulus proof-size host function next to the substrate ones. It returns u64::MAX when no proof recording is active, which weight-reclaim treats as disabled - correct for try-runtime use.
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Problem
execute-blockandfollow-chainfail on blocks that contain signed extrinsics, for any runtime that usescumulus-pallet-weight-reclaim:The CLI registers only
sp_io::SubstrateHostFunctions. The weight-reclaim transaction extension calls the cumulusstorage_proof_sizehost function on every signed extrinsic. The executor cannot resolve it, so block execution traps.All current system-chain runtimes use this pallet (checked: 9 runtimes in polkadot-sdk, 11 in runtimes). The two commands are therefore unusable against modern parachains.
Fix
Register
cumulus_primitives_proof_size_hostfunction::storage_proof_size::HostFunctionsnext to the substrate host functions. One line incli/main.rs, plus the dependency.When no proof recording is active, the host function returns
u64::MAX. Weight-reclaim treats that as "recording disabled" and skips reclaim. This is the correct behavior for try-runtime execution.Validation
Controlled A/B on a local
asset-hub-westenddev chain (omni-node, runtime withtry-runtimefeature):Balances::transfer_keep_alive(block 487)Block #487 successfully executedThe empty-block success explains why the bug can go unnoticed: it only appears when a block carries a signed extrinsic.
Also verified against ~500 blocks with
follow-chain --try-state Proxyon the same chain: no traps, try-state hooks run per block.