Third phase of the code-hygiene remediation: remove provably-dead code.
Each in-file deletion was adversarially verified (a per-finding investigator
plus a skeptic that greps the tree to refute deletability); the sanity grep
confirms zero dangling references, and the tree builds and self-mines clean.
Removed wholesale:
- src/cc/dapps/ (9 files, ~6,939 lines): a git-tracked but never-built Komodo
DEX / z-migration tool (hushdex.c, zmigrate.c, cJSON.c, ...). Nothing in
Makefile.am/configure.ac references it.
In-file dead code:
- pow.cpp: the `#ifdef original_algo` oldRT_CST_RST function (the macro is
never defined in source or build flags) and two `if ( 0 )` debug blocks.
- walletdb.cpp: the "orphaned staking transaction" cleanup path (deadTxns) —
DragonX is RandomX PoW with no staking, so the guard is always false and the
block never runs; also drop the now-unused static/extern decls.
- cc/eval.h: the ProcessCC / Eval::ImportCoin / ImportPayout / DisputePayout
declarations that have no definition anywhere in the tree.
- rpc/crosschain.cpp: the crosschainproof stub RPC (returned {} unconditionally)
and its registrations in rpc/server.cpp, rpc/server.h, rpc/client.cpp.
- coins.cpp: the commented-out `//TODO: delete` Sprout PushAnchor template.
- wallet.cpp: the permanently-zero KMD `interest2` term in CreateTransaction.
- rpc/net.cpp: hush_longestchain's always-zero `n` var (num > (n>>1) => num>0)
and its `if ( 0 )` debug branch.
- hush_nSPV.h / hush_nSPV_fullnode.h: three `if ( 0 && ... )` dead debug branches.
- net.cpp, crypter.h, saplingconsolidation.cpp (dup set_error_code),
shieldcoinbase.cpp (`donation < 0` on a uint8_t), cclib.cpp (unused
FAUCET2SIZE): single-line dead-code fixes.
Deliberately NOT touched (verification refuted the audit's "dead on DragonX"
premise): the ~2,250-line HUSH3 checkpoint block, the miner notary/timelock
paths, and hush_gateway.h — all reachable at runtime via -ac_name / -ac_*
args (the inherited Komodo assetchain model), and hush_gateway's
hush_opretvalidate is called from ConnectBlock (consensus). Dropping those
requires a deliberate decision to remove HAC/HUSH3 mode, tracked separately.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Phase 1 of the code-hygiene remediation. Each is a genuine defect, not
style. The two consensus functions are touched only by provably
behavior-preserving dead-code removal and a comment.
- miner: initialize the anti-spin loop counter (was `int i;` -- the loop
condition read an indeterminate value, UB) and break once the block
time advances past the median, which is what the comment intended.
- consensus/upgrades: drop a stray printf() on the NetworkUpgradeState
path; the following assert already documents the invariant.
- txdb: CBlockTreeDB::Snapshot2's outer catch treated ANY exception as
normal end-of-iteration and built a snapshot from partial data. Fail
instead, matching the inner catch the author marked consensus-relevant
("we need to exit here if so for consensus code!"). iter->Valid()
already handles genuine end-of-iteration.
- wallet/rpcwallet + init: -sietch-min-zouts used a "--" key that the arg
parser (which normalizes --foo to -foo) can never match, so the Sietch
decoy floor was silently stuck at the default. Use the single-dash key
so the knob works, and document it in -help.
- hush_bitcoind + hush_utils: remove four unreachable duplicate `else if`
branches from hush_commission()/hush_block_subsidy() (a second
`height < 23860000` and a second `height < 27220000` in each). Proven
identical across 49,591 heights. NB: the dead values hint at an intended
clean halving schedule that was never wired up; the DEPLOYED schedule
(two double-steps) is preserved exactly. Changing it is a future
consensus decision, not this cleanup.
- hush_bitcoind: replace the "likely a bug" halving TODO with an accurate
note -- INTERVAL is only consumed by a debug fprintf, so the > vs >=
boundary at HALVING1 has no consensus effect.
- git rm two committed macOS build artifacts (cc/customcc.dylib and
libcc.dylib) and add the missing .dylib .gitignore rules.
Built clean on Linux; an isolated node self-mined genesis->5113 exercising
the miner and consensus-subsidy paths, and getsnapshot returned normally.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Minimal rebrand (see compliant-rebrand branch for full rebrand):
- Rename binaries: hushd/hush-cli/hush-tx → dragonxd/dragonx-cli/dragonx-tx
- Default to DRAGONX chain params without -ac_* flags (randomx, blocktime=36, private=1)
- Update configure.ac: AC_INIT([DragonX],[1.0.0])
- Update client version string and user-agent to /DragonX:1.0.0/
- Add chainparams.cpp with DRAGONX network parameters
- Update build.sh, miner.cpp, pow.cpp for DragonX
- Add bootstrap-dragonx.sh utility script
- Update .gitignore for release directory
Share single RandomX dataset across all mining threads:
- Add RandomXDatasetManager with readers-writer lock, reducing RAM from
~2GB per thread to ~2GB total plus ~2MB per thread for the VM scratchpad
- Add LogProcessMemory() diagnostic helper for Linux and Windows
- Add CheckRandomXSolution() to validate RandomX PoW in nSolution field
- Add ASSETCHAINS_RANDOMX_VALIDATION activation height per chain
(DRAGONX: 2838976, TUMIN: 1200, others: height 1)
- Add CRandomXInput serializer for deterministic RandomX hash input
- Fix CheckProofOfWork() to properly reject invalid PoW (was missing
SMART_CHAIN_SYMBOL check, allowing bypass)
- Call CheckRandomXSolution() in hush_checkPOW and CheckBlockHeader
Without this fix, attackers could submit blocks with invalid RandomX
hashes that passed validation, as CheckProofOfWork returned early
during block loading and the nSolution field was never verified.
