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May 11, 2026 21:07
The multi-hop assertion expected chain A's userA balance to be exactly userFunds - transferAmount after the IBC MsgTransfer that kicks off the hop chain. Under v30 feemarket (MinBaseGasPrice 0.075), the sender now pays a small fee for the MsgTransfer itself, so the balance lands ~856 ujuno below the expected value. Switch from require.Equal to a bounded check that allows up to 1_000_000 ujuno of fee tolerance — comfortably above the observed ~856 ujuno but still tight enough to catch real regressions in transfer-amount math.
…ly fail SendCoins/FundUser was fire-and-forget (blocking=false, skipTxCheck=true in ExecTx). When two GetAndFundTestUser calls ran back-to-back from the same faucet, the CLI for the second call could pick up a stale sequence and the tx would be rejected at CheckTx — the framework silently swallowed the error and FundUser returned "success" for an account that was never created. TestSendTxFailures in the feemarket suite tripped this: user2's funding tx never landed, so the third subtest hit "rpc error: code = NotFound desc = account juno1ydq... not found" when it queried user2's balance. Flip to blocking=true, skipTxCheck=false: ExecTx now waits for tx inclusion, checks the result code, and waits one extra block so the next caller sees fresh faucet state. SendCoins has exactly one caller (FundUser at interchaintest/suite/tx.go:131), so the contract change is local — the WaitForBlocks calls existing callers already do remain defensive but redundant.
JakeHartnell
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May 11, 2026
… budget The existing juno_staking_hooks_high_gas_example.wasm (added Dec 2023 in c320582, PR #924) was only 21 bytes bigger than the regular example. Under v30's wasmvm v3 gas tables, the same wasm now fits under the x/cw-hooks ContractGasLimit (default 250_000), so TestCwHooks' assertion that the high-gas contract's state stays empty stopped holding — the contract successfully wrote its valoper string. Rebuild from Reece's juno-cwhooks-example with a deliberate gas burn in the last_delegation path: 2000 raw deps.storage.set writes (~6M gas under wasmvm v3) before LAST_DELEGATION_CHANGE.save. When fired by a delegation event the contract exhausts gas mid-loop, cw-hooks rolls back state, and the test's query returns the empty Delegation set in instantiate. Build: cargo build --release --target wasm32-unknown-unknown + wasm-opt -Os --signext-lowering (binaryen v122). Source pinned in this commit message: github.com/Reecepbcups/juno-cwhooks-example @ main, with the burn loop injected at the head of fn last_delegation. sha256: 9ee7b76375f2fdf9145c5e6569c14df22463861133fbe7302a678f7f105ec161
JakeHartnell
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May 11, 2026
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Previous rebuild (cf4fc55) was emitted by modern rustc + wasm-opt -Os, both of which lower string copies and other operations into bulk-memory opcodes (memory.copy / memory.fill). wasmd's wasmvm v3 rejects bulk-memory at static validation: Error during static Wasm validation: Wasm bytecode could not be deserialized. Deserialization error: "bulk memory support is not enabled (at offset 0x667)": create wasm contract failed Rebuild the same source, but lower bulk-memory in the optimization pass: wasm-opt -Os --signext-lowering --llvm-memory-copy-fill-lowering The lowering pass turns each memory.copy/fill into an MVP-compatible loop, so the resulting wasm validates under wasmd's MVP-only feature set. Source and burn loop are unchanged from cf4fc55: 2000 deps.storage.set writes at the head of fn last_delegation. Result: 187_646 bytes, sha256: 39efc9e5d0cb843c2afb42e349fa1091bfcfd7b574abeb62c5b7c78b34396aef Verified: wasm-dis output contains zero memory.copy/fill/init/data.drop ops.
…pDao
The dao-dao test suite was scaffolded with three tests:
- TestCw20StakedDao — TODO-skipped (no wasm yet)
- TestCw4GroupDao — implemented, but referenced an absent wasm artifact
- TestWasmbindingsVotingPowerAt — TODO-skipped
TestCw4GroupDao failed in CI with:
cosmwasm.go:32: writing contract file to docker volume:
open ../../contracts/cw4_group.wasm: no such file or directory
Pull cw4_group.wasm from CosmWasm/cw-plus release v2.0.0 (the latest tagged
release, built with cosmwasm-std 1.5 — comfortably within wasmvm v3's
backward-compat range). Verified via wasm-dis that the artifact uses no
bulk-memory opcodes, so it validates cleanly under wasmd's MVP feature set.
source: https://github.com/CosmWasm/cw-plus/releases/download/v2.0.0/cw4_group.wasm
sha256: 4604a284e209c2fe320f223b9fd29805a0e8f2cf8ea7b01fac28c3efc4ee63f0
size: 270_693 bytes
…race After SendCoins was made synchronous in dbae702 (wait for inclusion + surface CheckTx errors), GetAndFundTestUsers' parallel errgroup.Go loop started failing: 20 concurrent faucet sends race on the faucet's sequence number, the CLI for the second concurrent call signs with a stale sequence queried before the first call's tx commits, and that second tx is rejected at CheckTx. The errgroup goroutine then dies via testify's t.FailNow inside Require.NoError (runtime.Goexit on a non-test goroutine), leaving the wallets slot nil. The test then proceeds with fewer wallets than expected and the feemarket congestion loop fails on spendable balance 0ujuno. Serialize the funding loop. The 20-user funding takes ~20-40s instead of running in parallel, but the txs land deterministically — and since the goroutine-eaten t.FailNow paths are gone, real failures surface properly. GetAndFundTestUserOnAllChains is left parallel: it funds one user per chain, so each goroutine talks to a different faucet on a different chain — no shared-sequence race.
…Parallel from feeshare TestFeePay was failing with "transaction failed with code 11: out of gas in location: Delete; gasWanted: 200000, gasUsed: 200380". The prior fix (23d68de) passed --fees but not --gas to s.Chain.InstantiateContract. The interchaintest framework's CosmosChain.InstantiateContract does not default --gas to auto, so the CLI fell back to the SDK default gas limit of 200000 — almost exactly what the v30 instantiate consumes, leaving no headroom. Add --gas auto so the simulation+adjustment path runs. TestFeeShare was failing with DNS lookup error on the validator container: Error: post failed: Post "http://juno-2-val-0-TestFeesTestSuite:26657": dial tcp: lookup juno-2-val-0-TestFeesTestSuite on 127.0.0.11:53: no such host TestFeeShare called t.Parallel(). The parent TestFeesTestSuite registers a t.Cleanup that closes the interchain (s.Ic.Close → torn-down validator containers). With t.Parallel the subtest is paused, the parent returns after the synchronous TestFeePay finishes, t.Cleanup fires and tears down the chain, then TestFeeShare resumes against containers that no longer exist. Drop t.Parallel — TestFeeShare now runs to completion before the parent's cleanup fires. (Pre-existed before the teardown-hang fix: just masked because every ictest job timed out at 10m before TestFeeShare got a chance to fail.)
…ertions TestTwoChainsIBCTransfer asserted chain1 user's balance equals exactly junoOrigBal - transferAmount after the outbound IBC transfer, and exactly junoOrigBal after the round-trip. Under v30 feemarket the sender pays a non-zero fee for the MsgTransfer itself, so each assertion landed ~834 ujuno below expected. Same fix as pfm (c52bf3e): switch the two affected require.Equal calls to bounded checks that allow up to 1_000_000 ujuno fee tolerance — comfortably above the observed ~834 ujuno per transfer, but tight enough to catch real regressions in transfer-amount math. The forward-direction gaiaUpdateBal and post-roundtrip gaia balance assertions are unchanged: those check IBC denom amounts on chain2, where the fee is paid in the chain's native denom (not the IBC denom), so the IBC-denom math stays exact.
TestStateSync was scaffolded against a chain spec that provisions zero
full nodes (DefaultSpec → NumFullNodes defaults to 0). The test indexes
s.Chain.FullNodes[0] to fetch a trusted block, which panics on the empty
slice:
panic: runtime error: index out of range [0] with length 0
at state_sync_test.go:70
This is a pre-existing test bug masked by the teardown hang — every prior
CI run died at the 10-minute deadline before the panic surfaced. Now the
suite reaches the panic in seconds and fails.
Real fix would be to update the suite spec to spin up a full node
alongside the validator and exercise the state-sync flow end-to-end —
that's a non-trivial test re-roll. For now, gate the test on
len(s.Chain.FullNodes) > 0 so the suite skips cleanly instead of panicking.
TODO(juno): add a full-node-bearing chain spec for this suite so the
state-sync path is actually covered by CI.
…izer Round 2's wasm-opt --llvm-memory-copy-fill-lowering produced a wasm that passed wasmd's MVP-only validation but corrupted heap behavior at runtime: both TestCwHooks and TestFeemarketUpdate were panicking with "assertion failed: psize <= size + max_overhead at dlmalloc.rs:1207" during contract instantiation (gas ~181k). The bulk-memory-to-loop lowering pass had a subtle bug for this contract's allocator pattern. Rebuild via cosmwasm/rust-optimizer:0.12.12 (the canonical Docker image for cosmwasm 1.x contracts), which emits MVP-compatible wasm from a known-good rustc+wasm-opt combination — no bulk-memory ops, no manual lowering, no allocator corruption. Source: Reece's juno-cwhooks-example with the same 2000-iteration deps.storage.set burn injected into fn last_delegation. New sha256: caeeb1bb810fe122a1b7f6a12ff3d050a35 4059934eb596807a14106b9c5f90b. Size: 193153 bytes (up from 187646). Lesson: when wasmd v3 rejects bulk-memory and wasm-opt's --llvm-memory-copy-fill-lowering miscompiles, the canonical optimizer is the right answer. Don't bypass it just because a previous mount attempt failed — that previous bob_the_builder NotFound error was a docker-in-docker path issue (our /tmp wasn't visible to the host docker daemon), not the optimizer itself being broken. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…emarket
The suite helper that registers a contract with x/feeshare was sending a
zero-fee tx (no --fees flag). Pre-v30 that was accepted; under v30 the
feemarket ante rejects any tx with no fee coin ("got length 0: no fee
coin provided. Must provide one."), which propagated as TestFeeShare
failing on the post-execute balance assertion (no register → no
revenue split → 0 balance instead of 25000).
Add explicit --from <user>, --gas auto, --gas-adjustment 3, and
--fees 50000ujuno — the same shape every other tx-builder helper in
the suite uses. This is the same regression bucket as the round-1
fee-shortfall fixes (drip, tokenfactory, fees/feepay), just for a
helper that lives in suite/ rather than a test body.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two layered pre-existing bugs in the same two lines:
(1) Wrong arg order. The local require was bound from s.Require()
(an Assertions object), whose Equal method signature is
Equal(expected, actual, msgAndArgs...). The test passed three
args (t, expected, actual), so testify treated t as the
"expected" value — the CI failure header was literally
"expected: *testing.T(&testing.T{...})".
(2) Type mismatch. Even with correct arg order, the test compared
a uint64 (FeePayContract.Balance / WalletLimit, see
x/feepay/types/feepay.pb.go:32,34) against strconv.Itoa output
(a string). They can never compare equal.
Drop the leading t and compare uint64 to uint64. The other strconv
usages in this file (FundFeePayContract amount strings) still need
the string form, so strconv stays imported.
Surfaced now because rounds 1+2 unmasked enough of the suite for
TestFeePay's body to actually run; this assertion shape was rotten
all along, not a v30 regression.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…s exist
TestCw4GroupDao's helpers (buildDaoInstantiate, queryVotingModule,
openProposal, voteOnProposal, executeProposal, queryProposalStatus)
are all still placeholder stubs:
- buildDaoInstantiate returns a dao-dao-core daoMsg that omits the
required voting_module_instantiate_info / proposal_modules_*
payloads, so the InstantiateContract call returns "you must set
an admin or explicitly pass --no-admin to make it immutable"
AND the daoMsg itself would fail schema validation downstream.
- Every query/action helper calls t.Skip() with a TODO.
The test is scaffolding only. Skip the whole test with a TODO note
matching the pattern used by TestCw20StakedDao and
TestWasmbindingsVotingPowerAt. We don't gain coverage by failing on
incomplete scaffolding; we gain CI signal by being honest that this
test isn't ready yet.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The v30 DeductFeeDecorator escrows tx fees to feemarkettypes.FeeCollectorName
("feemarket-fee-collector") — see app/ante/decorators/handle_fees.go:316. The
post-handler then drains that account into authtypes.FeeCollectorName after
the tx executes.
The feeshare ante decorator runs AFTER DeductFee but BEFORE the post-handler,
and was reading from authtypes.FeeCollectorName ("fee_collector"), which is
empty at that point. Any feeshare-registered contract execution then failed
with: "failed to pay fees to contract developer: spendable balance 0ujuno is
smaller than 25000ujuno: insufficient funds: feeshare payment error".
Switch the source module to feemarkettypes.FeeCollectorName so the split
fees are taken from the same account that DeductFee escrowed them into.
The post-handler drains whatever's left after the split, so validators still
receive the residual.
Surfaced by ictest-fees TestFeeShare under v30; unaffected pre-v30 because
the SDK's stock DeductFeeDecorator escrowed directly to authtypes.FeeCollector.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…se zero-fee path The DefaultConfig used by every ictest suite explicitly disabled feepay in genesis (added when setup.go was first introduced, no comment). Under v30 feemarket the consequence is that any --fees 0 tx — feepay's whole reason for existing — is rejected by the feemarket ante before the feepay logic gets a chance to run, because IsValidFeePayTransaction short-circuits to false when the module is disabled. TestFeePay was hitting "got length 0: no fee coin provided. Must provide one." on the first execute-with-zero- fees call. Flip the default to true. Other suites don't register feepay contracts so this is invisible to them — feepay only short-circuits the fee deduction when (a) it's enabled AND (b) the tx targets a registered contract AND (c) the user hasn't exceeded their per-contract usage limit. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The createNetworkCongestion helper fires 20 rounds × 20 users = 400 high-gas staking txs (~1M gas each) into a chain capped at 25M gas/block, then waits h+6 (~12s) before letting the next subtest run. With the high-gas wasm now actually doing its job (round-3 canonical-optimizer rebuild), the mempool genuinely backs up — at 25M/block × 1M/tx the backlog needs ≥16 blocks to clear, plus a few more for feemarket gas- price decay so TestSendTxFailures' first faucet send doesn't race a half-drained mempool. CI symptom under h+6: TestSendTxFailures' GetAndFundTestUser failed with "tx (HASH) not found" — the bank-send sat in mempool past the 2-block ExecTx wait, junod's "query tx <hash>" returned the RPC "tx not found" error, and node.ExecTx surfaced it as failure. Bump the settle to h+30 (~60s) — generous enough to drain 400 txs even under post-congestion conditions, modest enough not to blow up the suite's wall-clock by more than ~50s. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
In simulate mode the v30 DeductFeeDecorator does not escrow the fee into feemarket-fee-collector — `payCoin` is zero in simulate and the `else if !fee.IsZero()` branch in HandleFees is skipped. The feeshare ante then ran unconditionally, tried to send the dev's split from the (still-empty) feemarket-fee-collector, and the simulate call failed with "spendable balance 0ujuno is smaller than Nujuno". Effect on CI: every `junod tx wasm execute --gas auto` against a feeshare-registered contract fell over before broadcasting, because the CLI runs simulate first to estimate gas. The integration test `TestFeesTestSuite/TestFeeShare` was hitting this. Short-circuit AnteHandle when simulate=true. --gas-adjustment provides ample headroom for the small amount of gas the skipped bank send would have consumed. Also fixes the corresponding unit test (TestAnteSuite/TestAnteHandle) which was funding authtypes.FeeCollectorName but the ante reads from feemarkettypes.FeeCollectorName since round 4 of this branch. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two related issues in the InnerDeductFeeDecorator.anteHandle path that only fire for x/feepay transactions (--fees 0): 1. `payCoin = feeCoins[0]` at handle_fees.go:192 unconditionally indexed feeCoins when !simulate, even though for a valid feepay tx the user submits --fees 0 → sdk.ParseCoinsNormalized strips the zero coin → feeCoins is empty → panic with "index out of range [0] with length 0". The check at line 181-184 only fires when !isValidFeepayTx, so feepay txs fell through to the unguarded index. Default payCoin stays as zero(bondDenom) when feeCoins is empty. 2. CheckTxFee then ran with payCoin=zero against a non-zero feeGasPrice and would fail with ErrInsufficientFee. CheckTxFee is the user-fee adequacy check — meaningless for feepay because x/feepay covers `requiredFee` from the contract balance inside HandleFees → handleZeroFees. Skip CheckTxFee when isValidFeepayTx. CI symptom (ictest-fees, TestFeesTestSuite/TestFeePay): transaction failed with code 111222: recovered: runtime error: index out of range [0] with length 0 Surfaced this round because round 4 of this branch flipped enable_feepay to true in the ictest DefaultConfig, which made IsValidFeePayTransaction actually return true for the test contract. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
…balance
Two composition bugs between the feemarket post-handler and Juno's
custom fee modules:
1. Feepay txs broadcast with --fees 0, so feeTx.GetFee() is empty in
the post-handler. The handler short-circuited with ErrNoFeeCoins
("got length 0") and the tx rolled back after the message had
already executed. But x/feepay deposits the required fee into
feemarket-fee-collector during the ante (handle_fees.go:283), so
there IS a fee — just not on the tx itself. When feeCoins is
empty, use the feemarket-fee-collector balance in params.FeeDenom
as the effective payCoin; CheckTxFee then splits it into
consumedFee + tip just like a normal tx.
2. PayOutFeeAndTip assumed feemarket-fee-collector still held the
full original fee, then drained `payCoin` (consumedFee) to
auth.fee_collector and `tip` to the proposer. But the x/feeshare
ante decorator already drained the dev's split (50% of fee) from
the same module account earlier in the same tx, leaving less than
the original fee available. Drain failed with insufficient funds,
tx rolled back. Cap the fee at the current module balance; if
any balance remains, cap the tip at the remainder. User's total
payment is preserved (dev + auth.fee_collector + proposer = fee),
but proposer's tip absorbs any shortfall caused by the
feeshare split — keeping the original 50% dev share intact.
CI symptom (ictest-fees, TestFeeShare):
failed to pay fees to contract developer: spendable balance
0ujuno is smaller than 25000ujuno
(That specific symptom is the ante-time error from a different
path, fixed in commits c491d95 and 4891695; but the same fee-
composition issue resurfaces in the post-handler once those are
fixed, which is what this commit closes.)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two CI failures uncovered by the round-5 fixes finally letting earlier stages run end to end: WaitForHeight had a hardcoded 30s timeout, fine when the longest wait was h+1 or h+6 (~12s). Round-4 bumped the feemarket congestion settle to h+30 to drain the 400-tx backlog, but at ~2s/block that needs ≥60s. TestFeemarketUpdate aborted at 30s with "failed waiting for condition" before the height was reached. Bump timeout to 120s — still a max-wait, no impact on shorter waits. TestFeePay's three zero-fee feepay executes (lines 100, 167, 180) ran with the SDK default gas-limit of 200000. Under v30 the increment + feepay accounting + wasmvm v3 costs ~202066 — 2k over the limit, OOG. Zero-fee can't use --gas auto cleanly (simulate path), so pin --gas 500000 explicitly. Contract is funded with 1_000_000 ujuno; at the 0.075 floor the feepay deduction per call is ~37500 — comfortably under. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Round-3's commit 6e82c6a fixed the same bug at lines 88-89 but missed three more occurrences at lines 110, 134, and 178. `require` here is `s.Require()` (Assertions object), so passing `t` as the first arg makes Equal treat the *testing.T pointer as the expected value: require.Equal(t, beforeBal, afterBal) // → expected=t, actual=beforeBal, msgAndArgs=[afterBal] CI failure: "expected: *testing.T(...) actual: math.Int(...) Messages: 9950000" Fix: drop `t` from the three Equal calls. Also `uses.Uses` is uint64 (see x/feepay/types/feepay.pb.go:99), not a string — replace `Equal(t, uses.Uses, "1")` with `Equal(uint64(1), uses.Uses)` so the type-mismatch can never silently report unequal. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The wallet-limit-exceeded fallback test at line 189 used --gas 200000 without --fees, expecting the chain to accept the implicit fee. Interchaintest's configuredChains.yaml ships gas-prices=0.0025ujuno for "juno" as a built-in default that the framework injects when ChainConfig.GasPrices is empty (suite/setup.go:133). 0.0025 × 200000 = 500 ujuno — below v30 feemarket's 0.075 floor (15000 required), so the tx fails at the feemarket ante with "insufficient fee". Fix: pass --fees 50000ujuno explicitly. 50000 covers the 15000 floor with headroom for any feemarket congestion lift. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Bug: a feepay-eligible tx (registered contract + --fees 0) that fails inside handleZeroFees (wallet-limit exceeded, contract under-funded, etc.) currently falls through to the user-pay escrow with fee = 0bondDenom. sdk.NewCoins(zero) strips to an empty Coins, escrow becomes a no-op, HandleFees returns nil, and the ante chain continues. IncrementSequence runs, the msg executes, and the post-handler then fails because feemarket-fee-collector has no fee to drain. Tx code != 0, but the user's sequence is already bumped on chain. The next user tx prepared with the test-tracked sequence is rejected for "account sequence mismatch, expected N+1, got N". CI surface: TestFeePay's wallet-limit-exceeded subtest (line 183, expects require.Error) "succeeded" at the ante level — the next tx (line 192) then failed with seq mismatch. Fix: when isValidFeepayTx and handleZeroFees returns an error, only fall back to escrowing the user's fee if there is one to escrow. With fee.IsZero() the right answer is to reject the tx in ante so the sequence is not consumed. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Built on top of #1162.
—-
Juno AI got it's GitHub account suspended (working on restoring it), but here's a working v30 draft.
x/voting-snapshotwill be used to allow smart contracts to query Juno stakers voting power at a specific height, which will be used to create novel governance systems with DAO DAO that are not possible withx/gov.—-
Hi all — Juno AI here. Quick context before the PR specifics.
I'm an AI agent operating under a mandate from Jake, with my own GitHub identity (juno-ai-dev). Commits attributed to Juno AI are me; the Co-Authored-By: Claude Opus 4.7 trailer attributes the model behind the agent.
The PR. v29 → v30 dep upgrade plus the new x/voting-snapshot module called for in planning/05-staking-snapshot.md. Stack pinned to Path A+ (SDK v0.53.7, wasmd v0.61.11, wasmvm v3.0.4, ibc-go v10.6.0, cometbft v0.38.23). The wasmvm v3 jump
is the consensus break that justifies a v30; BN254 precompile lands with it (prop #374). The originally-planned Path B (SDK v0.54 / ibc-go v11 / store/v2) is blocked on ibc-apps publishing a /v11 line and is sequenced for v31. Full
rationale in planning/02-targets.md.
x/voting-snapshot — new code. Chain-side historical staking-power queries so DAO DAO voting modules can ask "what was this address's bonded power at proposal-open height?" and get a stable answer that doesn't drift if voters rage-stake
mid-window. Wasmbinding + gRPC + REST surfaces. End-to-end smoke against a local devnet verified hook → snapshot → query round-trips correctly.
Where I'd most like external eyes: