1 //! Test that monitor update failures don't get our channel state out of sync.
2 //! One of the biggest concern with the monitor update failure handling code is that messages
3 //! resent after monitor updating is restored are delivered out-of-order, resulting in
4 //! commitment_signed messages having "invalid signatures".
5 //! To test this we stand up a network of three nodes and read bytes from the fuzz input to denote
6 //! actions such as sending payments, handling events, or changing monitor update return values on
7 //! a per-node basis. This should allow it to find any cases where the ordering of actions results
8 //! in us getting out of sync with ourselves, and, assuming at least one of our recieve- or
9 //! send-side handling is correct, other peers. We consider it a failure if any action results in a
10 //! channel being force-closed.
12 //Uncomment this for libfuzzer builds:
16 extern crate bitcoin_hashes;
17 extern crate lightning;
18 extern crate secp256k1;
20 use bitcoin::BitcoinHash;
21 use bitcoin::blockdata::block::BlockHeader;
22 use bitcoin::blockdata::transaction::{Transaction, TxOut};
23 use bitcoin::blockdata::script::{Builder, Script};
24 use bitcoin::blockdata::opcodes;
25 use bitcoin::network::constants::Network;
27 use bitcoin_hashes::Hash as TraitImport;
28 use bitcoin_hashes::hash160::Hash as Hash160;
29 use bitcoin_hashes::sha256::Hash as Sha256;
31 use lightning::chain::chaininterface;
32 use lightning::chain::transaction::OutPoint;
33 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
34 use lightning::chain::keysinterface::{ChannelKeys, KeysInterface};
35 use lightning::ln::channelmonitor;
36 use lightning::ln::channelmonitor::{ChannelMonitorUpdateErr, HTLCUpdate};
37 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage};
38 use lightning::ln::router::{Route, RouteHop};
39 use lightning::ln::msgs::{CommitmentUpdate, ChannelMessageHandler, ErrorAction, HandleError, UpdateAddHTLC, LocalFeatures};
40 use lightning::util::events;
41 use lightning::util::logger::Logger;
42 use lightning::util::config::UserConfig;
43 use lightning::util::events::{EventsProvider, MessageSendEventsProvider};
44 use lightning::util::ser::{Readable, Writeable};
47 use utils::test_logger;
49 use secp256k1::key::{PublicKey,SecretKey};
50 use secp256k1::Secp256k1;
52 use std::cmp::Ordering;
53 use std::collections::HashSet;
54 use std::sync::{Arc,Mutex};
55 use std::sync::atomic;
58 struct FuzzEstimator {}
59 impl FeeEstimator for FuzzEstimator {
60 fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
65 pub struct TestBroadcaster {}
66 impl BroadcasterInterface for TestBroadcaster {
67 fn broadcast_transaction(&self, _tx: &Transaction) { }
70 pub struct TestChannelMonitor {
71 pub simple_monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
72 pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
74 impl TestChannelMonitor {
75 pub fn new(chain_monitor: Arc<chaininterface::ChainWatchInterface>, broadcaster: Arc<chaininterface::BroadcasterInterface>, logger: Arc<Logger>, feeest: Arc<chaininterface::FeeEstimator>) -> Self {
77 simple_monitor: channelmonitor::SimpleManyChannelMonitor::new(chain_monitor, broadcaster, logger, feeest),
78 update_ret: Mutex::new(Ok(())),
82 impl channelmonitor::ManyChannelMonitor for TestChannelMonitor {
83 fn add_update_monitor(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
84 assert!(self.simple_monitor.add_update_monitor(funding_txo, monitor).is_ok());
85 self.update_ret.lock().unwrap().clone()
88 fn fetch_pending_htlc_updated(&self) -> Vec<HTLCUpdate> {
89 return self.simple_monitor.fetch_pending_htlc_updated();
95 session_id: atomic::AtomicU8,
96 channel_id: atomic::AtomicU8,
98 impl KeysInterface for KeyProvider {
99 fn get_node_secret(&self) -> SecretKey {
100 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, self.node_id]).unwrap()
103 fn get_destination_script(&self) -> Script {
104 let secp_ctx = Secp256k1::signing_only();
105 let channel_monitor_claim_key = SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, self.node_id]).unwrap();
106 let our_channel_monitor_claim_key_hash = Hash160::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
107 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
110 fn get_shutdown_pubkey(&self) -> PublicKey {
111 let secp_ctx = Secp256k1::signing_only();
112 PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, self.node_id]).unwrap())
115 fn get_channel_keys(&self, _inbound: bool) -> ChannelKeys {
117 funding_key: SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, self.node_id]).unwrap(),
118 revocation_base_key: SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, self.node_id]).unwrap(),
119 payment_base_key: SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, self.node_id]).unwrap(),
120 delayed_payment_base_key: SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, self.node_id]).unwrap(),
121 htlc_base_key: SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, self.node_id]).unwrap(),
122 commitment_seed: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, self.node_id],
126 fn get_session_key(&self) -> SecretKey {
127 let id = self.session_id.fetch_add(1, atomic::Ordering::Relaxed);
128 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, id, 10, self.node_id]).unwrap()
131 fn get_channel_id(&self) -> [u8; 32] {
132 let id = self.channel_id.fetch_add(1, atomic::Ordering::Relaxed);
133 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, id, 11, self.node_id]
138 pub fn do_test(data: &[u8]) {
139 let fee_est = Arc::new(FuzzEstimator{});
140 let broadcast = Arc::new(TestBroadcaster{});
142 macro_rules! make_node {
143 ($node_id: expr) => { {
144 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string()));
145 let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
146 let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
148 let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
149 let mut config = UserConfig::new();
150 config.channel_options.fee_proportional_millionths = 0;
151 config.channel_options.announced_channel = true;
152 config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
153 (ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap(),
158 let mut channel_txn = Vec::new();
159 macro_rules! make_channel {
160 ($source: expr, $dest: expr, $chan_id: expr) => { {
161 $source.create_channel($dest.get_our_node_id(), 10000000, 42, 0).unwrap();
163 let events = $source.get_and_clear_pending_msg_events();
164 assert_eq!(events.len(), 1);
165 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
167 } else { panic!("Wrong event type"); }
170 $dest.handle_open_channel(&$source.get_our_node_id(), LocalFeatures::new(), &open_channel).unwrap();
171 let accept_channel = {
172 let events = $dest.get_and_clear_pending_msg_events();
173 assert_eq!(events.len(), 1);
174 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
176 } else { panic!("Wrong event type"); }
179 $source.handle_accept_channel(&$dest.get_our_node_id(), LocalFeatures::new(), &accept_channel).unwrap();
181 let events = $source.get_and_clear_pending_events();
182 assert_eq!(events.len(), 1);
183 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
184 let tx = Transaction { version: $chan_id, lock_time: 0, input: Vec::new(), output: vec![TxOut {
185 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
187 let funding_output = OutPoint::new(tx.txid(), 0);
188 $source.funding_transaction_generated(&temporary_channel_id, funding_output);
189 channel_txn.push(tx);
190 } else { panic!("Wrong event type"); }
193 let funding_created = {
194 let events = $source.get_and_clear_pending_msg_events();
195 assert_eq!(events.len(), 1);
196 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
198 } else { panic!("Wrong event type"); }
200 $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created).unwrap();
202 let funding_signed = {
203 let events = $dest.get_and_clear_pending_msg_events();
204 assert_eq!(events.len(), 1);
205 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
207 } else { panic!("Wrong event type"); }
209 $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed).unwrap();
212 let events = $source.get_and_clear_pending_events();
213 assert_eq!(events.len(), 1);
214 if let events::Event::FundingBroadcastSafe { .. } = events[0] {
215 } else { panic!("Wrong event type"); }
220 macro_rules! confirm_txn {
222 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
223 let mut txn = Vec::with_capacity(channel_txn.len());
224 let mut posn = Vec::with_capacity(channel_txn.len());
225 for i in 0..channel_txn.len() {
226 txn.push(&channel_txn[i]);
227 posn.push(i as u32 + 1);
229 $node.block_connected(&header, 1, &txn, &posn);
231 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
232 $node.block_connected(&header, i, &Vec::new(), &[0; 0]);
237 macro_rules! lock_fundings {
238 ($nodes: expr) => { {
239 let mut node_events = Vec::new();
240 for node in $nodes.iter() {
241 node_events.push(node.get_and_clear_pending_msg_events());
243 for (idx, node_event) in node_events.iter().enumerate() {
244 for event in node_event {
245 if let events::MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = event {
246 for node in $nodes.iter() {
247 if node.get_our_node_id() == *node_id {
248 node.handle_funding_locked(&$nodes[idx].get_our_node_id(), msg).unwrap();
251 } else { panic!("Wrong event type"); }
255 for node in $nodes.iter() {
256 let events = node.get_and_clear_pending_msg_events();
257 for event in events {
258 if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
259 } else { panic!("Wrong event type"); }
265 // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
267 let (node_a, monitor_a) = make_node!(0);
268 let (node_b, monitor_b) = make_node!(1);
269 let (node_c, monitor_c) = make_node!(2);
271 let nodes = [node_a, node_b, node_c];
273 make_channel!(nodes[0], nodes[1], 0);
274 make_channel!(nodes[1], nodes[2], 1);
276 for node in nodes.iter() {
280 lock_fundings!(nodes);
282 let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
283 let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
285 let mut payment_id = 0;
287 let mut chan_a_disconnected = false;
288 let mut chan_b_disconnected = false;
289 let mut chan_a_reconnecting = false;
290 let mut chan_b_reconnecting = false;
292 macro_rules! test_err {
296 Err(HandleError { action: Some(ErrorAction::IgnoreError), .. }) => { },
297 _ => { $res.unwrap() },
302 macro_rules! test_return {
304 assert_eq!(nodes[0].list_channels().len(), 1);
305 assert_eq!(nodes[1].list_channels().len(), 2);
306 assert_eq!(nodes[2].list_channels().len(), 1);
311 let mut read_pos = 0;
312 macro_rules! get_slice {
315 let slice_len = $len as usize;
316 if data.len() < read_pos + slice_len {
319 read_pos += slice_len;
320 &data[read_pos - slice_len..read_pos]
326 macro_rules! send_payment {
327 ($source: expr, $dest: expr) => { {
328 let payment_hash = Sha256::hash(&[payment_id; 1]);
329 payment_id = payment_id.wrapping_add(1);
330 if let Err(_) = $source.send_payment(Route {
331 hops: vec![RouteHop {
332 pubkey: $dest.0.get_our_node_id(),
333 short_channel_id: $dest.1,
335 cltv_expiry_delta: 200,
337 }, PaymentHash(payment_hash.into_inner())) {
338 // Probably ran out of funds
342 ($source: expr, $middle: expr, $dest: expr) => { {
343 let payment_hash = Sha256::hash(&[payment_id; 1]);
344 payment_id = payment_id.wrapping_add(1);
345 if let Err(_) = $source.send_payment(Route {
346 hops: vec![RouteHop {
347 pubkey: $middle.0.get_our_node_id(),
348 short_channel_id: $middle.1,
350 cltv_expiry_delta: 100,
352 pubkey: $dest.0.get_our_node_id(),
353 short_channel_id: $dest.1,
355 cltv_expiry_delta: 200,
357 }, PaymentHash(payment_hash.into_inner())) {
358 // Probably ran out of funds
364 macro_rules! process_msg_events {
365 ($node: expr, $corrupt_forward: expr) => { {
366 for event in nodes[$node].get_and_clear_pending_msg_events() {
368 events::MessageSendEvent::UpdateHTLCs { ref node_id, updates: CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
369 for (idx, dest) in nodes.iter().enumerate() {
370 if dest.get_our_node_id() == *node_id &&
371 (($node != 0 && idx != 0) || !chan_a_disconnected) &&
372 (($node != 2 && idx != 2) || !chan_b_disconnected) {
373 assert!(update_fee.is_none());
374 for update_add in update_add_htlcs {
375 if !$corrupt_forward {
376 test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &update_add));
378 // Corrupt the update_add_htlc message so that its HMAC
379 // check will fail and we generate a
380 // update_fail_malformed_htlc instead of an
381 // update_fail_htlc as we do when we reject a payment.
382 let mut msg_ser = update_add.encode();
383 msg_ser[1000] ^= 0xff;
384 let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
385 test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg));
388 for update_fulfill in update_fulfill_htlcs {
389 test_err!(dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), &update_fulfill));
391 for update_fail in update_fail_htlcs {
392 test_err!(dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), &update_fail));
394 for update_fail_malformed in update_fail_malformed_htlcs {
395 test_err!(dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), &update_fail_malformed));
397 test_err!(dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed));
401 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
402 for (idx, dest) in nodes.iter().enumerate() {
403 if dest.get_our_node_id() == *node_id &&
404 (($node != 0 && idx != 0) || !chan_a_disconnected) &&
405 (($node != 2 && idx != 2) || !chan_b_disconnected) {
406 test_err!(dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg));
410 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
411 for (idx, dest) in nodes.iter().enumerate() {
412 if dest.get_our_node_id() == *node_id {
413 test_err!(dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg));
414 if $node == 0 || idx == 0 {
415 chan_a_reconnecting = false;
416 chan_a_disconnected = false;
418 chan_b_reconnecting = false;
419 chan_b_disconnected = false;
424 events::MessageSendEvent::SendFundingLocked { .. } => {
425 // Can be generated as a reestablish response
427 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
428 // Can be generated due to a payment forward being rejected due to a
429 // channel having previously failed a monitor update
431 _ => panic!("Unhandled message event"),
437 macro_rules! process_events {
438 ($node: expr, $fail: expr) => { {
439 // In case we get 256 payments we may have a hash collision, resulting in the
440 // second claim/fail call not finding the duplicate-hash HTLC, so we have to
441 // deduplicate the calls here.
442 let mut claim_set = HashSet::new();
443 let mut events = nodes[$node].get_and_clear_pending_events();
444 // Sort events so that PendingHTLCsForwardable get processed last. This avoids a
445 // case where we first process a PendingHTLCsForwardable, then claim/fail on a
446 // PaymentReceived, claiming/failing two HTLCs, but leaving a just-generated
447 // PaymentReceived event for the second HTLC in our pending_events (and breaking
448 // our claim_set deduplication).
449 events.sort_by(|a, b| {
450 if let events::Event::PaymentReceived { .. } = a {
451 if let events::Event::PendingHTLCsForwardable { .. } = b {
453 } else { Ordering::Equal }
454 } else if let events::Event::PendingHTLCsForwardable { .. } = a {
455 if let events::Event::PaymentReceived { .. } = b {
457 } else { Ordering::Equal }
458 } else { Ordering::Equal }
460 for event in events.drain(..) {
462 events::Event::PaymentReceived { payment_hash, .. } => {
463 if claim_set.insert(payment_hash.0) {
465 assert!(nodes[$node].fail_htlc_backwards(&payment_hash));
467 assert!(nodes[$node].claim_funds(PaymentPreimage(payment_hash.0)));
471 events::Event::PaymentSent { .. } => {},
472 events::Event::PaymentFailed { .. } => {},
473 events::Event::PendingHTLCsForwardable { .. } => {
474 nodes[$node].process_pending_htlc_forwards();
476 _ => panic!("Unhandled event"),
482 match get_slice!(1)[0] {
483 0x00 => *monitor_a.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
484 0x01 => *monitor_b.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
485 0x02 => *monitor_c.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
486 0x03 => *monitor_a.update_ret.lock().unwrap() = Ok(()),
487 0x04 => *monitor_b.update_ret.lock().unwrap() = Ok(()),
488 0x05 => *monitor_c.update_ret.lock().unwrap() = Ok(()),
489 0x06 => nodes[0].test_restore_channel_monitor(),
490 0x07 => nodes[1].test_restore_channel_monitor(),
491 0x08 => nodes[2].test_restore_channel_monitor(),
492 0x09 => send_payment!(nodes[0], (&nodes[1], chan_a)),
493 0x0a => send_payment!(nodes[1], (&nodes[0], chan_a)),
494 0x0b => send_payment!(nodes[1], (&nodes[2], chan_b)),
495 0x0c => send_payment!(nodes[2], (&nodes[1], chan_b)),
496 0x0d => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
497 0x0e => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
499 if !chan_a_disconnected {
500 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
501 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
502 chan_a_disconnected = true;
506 if !chan_b_disconnected {
507 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
508 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
509 chan_b_disconnected = true;
513 if chan_a_disconnected && !chan_a_reconnecting {
514 nodes[0].peer_connected(&nodes[1].get_our_node_id());
515 nodes[1].peer_connected(&nodes[0].get_our_node_id());
516 chan_a_reconnecting = true;
520 if chan_b_disconnected && !chan_b_reconnecting {
521 nodes[1].peer_connected(&nodes[2].get_our_node_id());
522 nodes[2].peer_connected(&nodes[1].get_our_node_id());
523 chan_b_reconnecting = true;
526 0x13 => process_msg_events!(0, true),
527 0x14 => process_msg_events!(0, false),
528 0x15 => process_events!(0, true),
529 0x16 => process_events!(0, false),
530 0x17 => process_msg_events!(1, true),
531 0x18 => process_msg_events!(1, false),
532 0x19 => process_events!(1, true),
533 0x1a => process_events!(1, false),
534 0x1b => process_msg_events!(2, true),
535 0x1c => process_msg_events!(2, false),
536 0x1d => process_events!(2, true),
537 0x1e => process_events!(2, false),
543 #[cfg(feature = "afl")]
544 #[macro_use] extern crate afl;
545 #[cfg(feature = "afl")]
552 #[cfg(feature = "honggfuzz")]
553 #[macro_use] extern crate honggfuzz;
554 #[cfg(feature = "honggfuzz")]
563 #[cfg(feature = "libfuzzer_fuzz")]
564 #[macro_use] extern crate libfuzzer_sys;
565 #[cfg(feature = "libfuzzer_fuzz")]
566 fuzz_target!(|data: &[u8]| {
574 fn duplicate_crash() {
575 super::do_test(&::hex::decode("00").unwrap());