Bugs in NetHack 3.4.3

A bug is a problem in NetHack's source code. There are two lists of bugs for vanilla 3.4.3 provided by the DevTeam: one for nonspoiler bugs and one for spoiler bugs.

The variants keep track of their bugs at Bugs_in_NetHack_4, User:Bulwersator/UnNetHackPlus_bug_tracking and apparently User:SGrunt/GruntHack_vanilla_bug_tracking.

Reporting bugs

Report bugs in vanilla NetHack directly to the DevTeam, either by emailing them, or using their contact form. Please also add them to the section Bugs not mentioned on the DevTeam's website below and consider adding your bug report to the list of bug reports, since the DevTeam's bug descriptions often are too vague to be helpful.

Status table

Status	Description
Open	The bug is unresolved, but the DevTeam knows what they need to do about it.
Not a bug	Sometimes people think this is a bug, but they're wrong.
fixed	The bug will be fixed in the next bug-fix release.
Fixed	The bug will be fixed in a future release.
Help	The DevTeam does not know what is causing this and would appreciate related bug reports.
Superseded	See another entry for information on this bug.

Core bugs

Last updated: 2011-08-23

Name	Status	Patch	Description	Additional info
C341-1	Fixed		Monsters affected by stinking cloud always get angry at the hero even if the hero did not create the cloud.	This is possible loading bones levels created with earlier versions (NetHack 3.4.0 according to Bugs in NetHack 4).
C341-4	Fixed		opthelp does not list use_inverse
C341-5	Fixed		When you see your pet move, the pet may be referred to as "it".
C341-7	Fixed		Skilled or expert caster of fireball/cone of cold can't target a monster known only by infravision or ESP.
C341-10	Fixed		Fruit names ending in "us" are incorrectly considered plural.
C341-18	Fixed		ki-rins and couatls can wear (and may have) armor.	Shields, boots, gloves, and (non-metallic for ki-rin) helmets.
C342-12	Fixed		There are a number of places that misuse "your".
C342-13	Fixed		Hangup can cause loss of objects being moved internally.
C342-16	Fixed		If you self-genocide while polymorphed, the death message makes no sense.
C342-19	Fixed		Things that can kill you in the future (like stoning) can cause messages to show up out of order.
C342-22	Fixed		Monsters can hide under cockatrice corpses without getting stoned.	Also: "You sit on the cockatrice corpse. It is not very comfortable."
C342-31	Open		You can get a message telling you a monster wields a weapon it already was wielding.
C342-36	Fixed		If unable to see yourself while invisible and you are bestowed a spellbook, it doesn't show up on the display.
C342-46	fixed		Cleric cast lightning doesn't blind as other lightning does.
C342-50	Fixed		If you're hiding on the ceiling and try to #sit, you automatically unhide.
C342-51	Fixed		The game thinks trappers hide on the ceiling.
C342-54	Fixed		Statues of unique monsters in bones files are not handled correctly.	Multiple unique monster problem also may be caused by corpses.
C343-1	fixed	NitroHack	At a pit the game can give messages with poor grammar.	Levitate over a pit and drop something while blind: "You hear The amulet of reflection tumbles downwards."
C343-2	fixed		Wielded silver arrows don't cause silver damage on some silver-haters.
C343-3	fixed		In the ranger quest, monsters can end up off the map to the left.
C343-4	fixed		On the Rogue level, tunnelling through rock doesn't leave a passage.
C343-5	fixed		In wizard mode, level teleport in the endgame can cause a crash if confused.
C343-6	fixed		You can #sit on an object at the bottom of a pit that you are not in.	But you can't pick it up or enter the pit with >, which is arguably the real bug.
C343-7	fixed		When a steed pushes a boulder into a pool, the message misuses "you".
C343-8	fixed		Plural of Nazgul is Nazgul - not Nazguls.
C343-9	fixed		Trap messages referring to a named steed when hallucinating are poorly worded.
C343-10	fixed		If there is a corpse in a pit, you have to enter the pit to pick it up but not to eat it.
C343-11	fixed		If you ask for help ('?') at a "what direction" prompt, you don't get to enter a direction afterward if the cmdassist option is set.
C343-12	fixed		You can't use '>' to enter a pit.
C343-13	fixed		On polymorph, you can get the message "It turns into it".
C343-14	fixed		The initial and any tombstone message resulting from eating an identified artifact is gramatically incorrect.
C343-15	fixed		You can get a message that an invisible monster looks much better.
C343-16	fixed		Player polymorphed as a xorn can't pick up items in pits.	You have to fall into a pit, which xorns can't. Workaround: levitate and apply a bullwhip down.
C343-17	fixed	UnNetHackPlus+[1]	After polymorphing into a xorn and returning to human form, player can be stuck in a pit that isn't there.	After polymorphing into any non-phasing monster, you are reliably stuck in a nonexistant pit.
C343-18	fixed		Scaring a mimicing mimic gives an incorrect "turns to flee" message.	Immobile monsters can have the "flee" status, but will not move away from you.
C343-19	fixed	Bilious #340	Dipping acid in a fountain may not destroy the acid.
C343-20	Open		When dying immediately on entering a level, the map may show you dying on the previous level.	This doesn't matter - mostly.
C343-21	Open		Pets can be pulled through closed doors with a leash.
C343-22	Fixed		You can untrap a monster in a pit while levitating.
C343-23	Help		Dungeon collapses after vault guard fails to lead you out.
C343-24	Fixed		Documented default for option "null" is "off"; default is actually "on".
C343-25	Fixed		You can trip over a cockatrice corpse safely.
C343-26	Fixed		A frozen swamp may be called a moat.
C343-27	Fixed		Kicked objects do not slide properly on air or water levels.
C343-28	fixed		There are several places that can't tell the diffence between a "hat" and a "helmet."
C343-29	fixed		When taking things out of a bag of holding, messages may say "lifting" instead of "removing."
C343-30	fixed	GruntHack	Cursed scroll of destroy armor on cursed armor doesn't always interact correctly.	You can make the stats gain from putting on an enchanted helm of brilliance or gloves of dexterity permanent by cursing the armor and reading cursed destroy armor.
C343-31	fixed		If you hit a cockatrice with a weapon that breaks, you can be stoned.
C343-32	Fixed		When blind and levitating, the hero can still discover stairs.
C343-33	Fixed		Sometimes a monster may remain hidden under a corpse that has rotted away.
C343-34	Fixed		Mimics on the rogue level may try to mimic a closed door.
C343-35	fixed		Polymorphed or shapechanged monsters may get the wrong number of hit points.	On polymorph, the ratio HP / max HP is preserved, perhaps this bug refers to rounding errors.
C343-36	fixed		Weight of corpses on special levels may not be calculated correctly.	This also goes for statues, e.g. the Oracle centaur statues.
C343-37	Fixed		Mimics may mimic a boulder over a pit or hole.
C343-38	Open		Dismounting and kicking a monster that jumps may result in landing on the wrong side of a wall.	Kicking a monster makes them mnexto() you, then tries to flavour the resulting movement. In very confined spaces, mnexto() may not be able to find a space next to you after all. This applies to many monsters with speed >= 12 with a chance of 1/3 or 1/4 depending on how well you kicked, and the bug occurs whether it’s flavoured as “jumps” or “slides” or “floats” or whatever. (A subsidiary bug here: it can also be flavoured as “teleports”, yet trigger on a no-tele level.)
C343-39	fixed		Restoring a game where the character is wielding Sting may result in temporary display errors during the restore process.
C343-40	fixed		Monster thrusting one of multiple wielded daggers gives misleading message.	The interface isn’t clear that wielding 6 daggers, or whatever, nevertheless means that you only attack with one.
C343-41	fixed		A rolling boulder falling into a pit you can't see only makes a sound if the hero is blind.
C343-42	fixed		If a fire trap melts ice, it may trigger twice in the same turn.
C343-43	Fixed		An invisible troll that revives may be shown until it moves.
C343-44	fixed		Shopkeepers, doors, and traps interact oddly.	For example, if you break a wand of digging on the entrance square, the shopkeeper will usually remove only some of the pits.
C343-45	fixed		Dropping the corpse of a unique monster without a personal name down the stairs gives a badly formed response.
C343-46	fixed		Breaking up a boulder or statue can result in pieces that are described incorrectly.
C343-47	fixed		Monster and hero have different odds to err when throwing a greased weapon.
C343-48	fixed		Killing your pet doesn't get you any experience when it should.
C343-49	fixed		The boulder does not show up in a bones file caused by death by rolling boulder.
C343-50	fixed		A sleeping steed may answer a #chat.
C343-51	fixed		Luck's effect on random events isn't always as intended.	Several beneficial events are most likely with Luck=7, not maximum Luck. See rnl for details.
C343-52	fixed		Worn or wielded objects destroyed by dipping into lit potions of oil are not handled properly; this can result in odd game behavior.
C343-53	fixed		If a shopkeeper is trapped adjacent to the door, the game may get confused and issue impossible or panic messages.
C343-54	fixed		"Ulch" cannibalism message grammar is poor.	Eating a zombie of your race: "Ulch - that meat was tainted cannibal! You feel deathly sick."
C343-55	fixed		"Ulch" messages have inconsistent capitalization.
C343-56	fixed		Gas spores can't attack while hero is praying.
C343-57	fixed		#enhance command descriptions in Guidebook and game do not match.
C343-58	fixed		#conduct command description grammar is poor
C343-59	fixed		Engulfer stoned swallowing hero polymorphed to cockatrice causes incorrect screen display. If hero has ball & chain, game can panic.
C343-60	fixed		Several messages delivered when hero's fingers are slippery have poor grammar.
C343-61	fixed		Using a WIZKIT including the quest artifact will crash the game at startup.
C343-62	fixed		Riding into a magic portal gives an extra, useless message.
C343-63	fixed		You can drink from a sink, fountain, or while underwater while swallowed.	In a similar vein, #praying on a cross-aligned altar also works.
C343-64	fixed		A black light leaves an hallucinated corpse while exploding.
C343-65	fixed		A monster that "shrieks in pain" may not awaken others nearby.	This is missing a wake_nearby call in the two relevant locations in potion.c.
C343-66	fixed		Co-aligned unicorns in a bones file may be hostile.
C343-67	fixed		Finding a statue when searching while blind doesn't update map.
C343-68	fixed		Incorrect message may be given when a spellcasting monster summons other monsters.
C343-69	fixed		Attempting to add more candles than needed to a candelabrum with at least one candle gives an incorrect message.
C343-70	fixed		Experience may not be correctly gained for monsters causing nonphysical damage.	"Difficult" attacks it possesses make a monster worth more experience, but the way these bonus points are calculated underrates physical damage.
C343-71	Fixed		When swapping places with a pet pushes it into a trap, the messages are out of order.
C343-72	Fixed	UnNetHack	You get confusing messages when you stop levitating while on a flying steed.	"You float gently to the lava." is probably the silliest variant. The messages don't consider the fact that you're flying.
C343-73	fixed		Trying to kick a monster on a level forbidding teleport may give a bogus "teleports" message.
C343-74	fixed		Entering a long running, uninterruptible command (e. g. engraving) after stoning starts will kill you.
C343-75	fixed		Eating Medusa's corpse may not work properly.
C343-76	fixed		A tin of Medusa meat isn't warned about properly.
C343-77	fixed		Some messages referring to monsters that look like horses refer to claws.	polyself.c lists claws as a horse’s manipulatory appendages.
C343-78	fixed		Digging in an existing hole charges you for the time it takes to dig the whole hole.
C343-79	fixed		"Mr." or "Ms." may show up in front of names when it should not.	In death messages, all shopkeepers will have an honorific, even if the shopkeeper's name is clearly a given name, not a surname (e.g. Dirk, Lucrezia, Izchak).
C343-80	fixed		Tame monsters with multiple attacks may allow themselves to be killed through passive attacks.
C343-81	fixed		Ghosts can be slimed.
C343-82	fixed		Land mine explosion on a drawbridge doesn't work right.
C343-83	fixed		An eating pet will miss out on ascension.
C343-84	fixed		"finally finished" may be displayed when not eating.
C343-85	fixed		Sometimes the hero can't move when conscious.
C343-86	fixed		Hero can appear to be in the wall after destroying a drawbridge.
C343-87	fixed		Sometimes shop items the hero is forced to buy can be sold twice.
C343-88	fixed		Polymorphing a statue into a boulder can leave an incorrect display.
C343-89	Fixed		Unpaid objects damaged or improved in shops are not accounted for properly.
C343-90	fixed		"I u" with only one item unpaid lists the price twice.
C343-91	fixed		Auto-cursing armor does not do so when worn by monster.
C343-92	fixed		A blind player may find a trap which then fails to show up on the map.
C343-93	fixed		Astral vision can confuse the ; command.
C343-94	fixed		Probing a re-animated statue may cause a panic.
C343-95	fixed		If killed by the wish from a magic lamp (or similar situation) and a bones file is produced, the bones file has the lamp in the wrong state.
C343-96	fixed		If player aborts "In what direction?" question, prompt may remain displayed.
C343-97	fixed		ctrl + r and ctrl + l don't work in numberpad mode
C343-98	fixed		Chatting with quest leader brought back from the dead doesn't work.
C343-99	fixed		Hero can still see for brief period after being blinded by potion vapors.
C343-100	fixed	Bilious #341	Game may crash if thrown potion hits bars before a monster.
C343-101	fixed		The hero can see some things while asleep.
C343-102	Open		Messages delivered when the ceiling collapses on a swallowed hero need revision.
C343-103	fixed		The hero is not protected from a mind flayer during successful prayer.	Refers to the psychic blast.
C343-104	fixed		Message from angry shopkeeper giving a price when hero picks up an object has poor spacing and construction.	"For you, scum ; only 534 for this emerald ring." (note the extra space)
C343-105	Not a bug		Message given when restoring a game refers to original gender and form, not current.
C343-106	fixed		Sunsword continues to glow after its wielder dies.
C343-107	fixed		Killing your own steed never leaves a corpse.
C343-108	Open		Entering "e-" does not remove the prompt.
C343-109	fixed	GruntHack	There is a grammar error in the Tourist leader's greeting.	Could be changed to "Is it really you, %p?" or "It is really you, %p!"
C343-110	fixed		Game can crash if shopkeeper dies while character is praying.
C343-111	fixed		Grammar of some graveyard sounds messages is wrong in some cases.
C343-112	fixed		Hero and monster afflicted with lycanthropy are treated differently.
C343-113	fixed		When flying down a hole or a ladder, the messages are inaccurate.	Doing this with a ladder while polymorphed actually produces no message at all. The message is most likely related to flying steeds, though; while riding a ki-rin, you climb up ladders, fly down ladders, and jump down holes, which is a clear inconsistency. (It's not clear which of the messages is correct.)
C343-114	fixed		Removing some but not all the boulders from a location confuses the vision system.
C343-115	fixed		Sleeping or paralyzed unicorns can catch gems.
C343-116	fixed		Grammar error in messages related to choking on gold.
C343-117	Fixed		Gaining and losing levels in normal and monster form do not balance.
C343-118	fixed	[2]+[3]	Some messages use "mirror" where they should use "looking glass."
C343-119	fixed		Options IBMgraphics, DECgraphics, and MACgraphics interact oddly in the config file, resulting in odd listings from the O command.	Workaround: only specify one option in the config file.
C343-120	Not a bug		There is no warning when hitting floating eyes.
C343-121	Fixed		Eating various brains which should have special handling, don't.	You may safely eat brain of Medusa and Riders as mind flayer.
C343-122	fixed		Alignment of Angels is not handled consistently.
C343-123	Fixed		Plural of "mother-in-law" is incorrect.
C343-124	fixed		You can't rub a touchstone on gold.
C343-125	fixed		Killing a vault guard outside a vault gives incorrect feedback.
C343-126	fixed		When wielding Grayswandir, feedback from a trapped chest may be wrong.
C343-127	fixed		If a vault guard leads the hero to gold in the rock, inappropriate feedback is given.
C343-128	Fixed		Feedback for gas spore explosion when hallucinating could be improved.
C343-129	Fixed		Cancelling objects in or near a shop doorway may make the shopkeeper think you are a thief.	The error’s in zap.c, around line 794; it checks to see if you’re in the shop, rather than whether the object is.
C343-130	fixed		Sometimes you can't rub an arbitrary object on a touchstone.	Perhaps this refers to the fact you cannot check for kicking boots and gauntlets of power once the touchstone has been formally identified.
C343-131	fixed		Message has poor grammar if hero killed when stealing cockatrice corpse from a monster.
C343-132	fixed		Message when death caused by kicking an object can be too verbose.
C343-133	Fixed		Effects of varying consuming Medusa are inconsistent.	Description does not adequately differentiate this bug from C343-75, C343-76 and C343-121.
C343-134	Fixed		Being petrified by swallowing a cockatrice violates foodless conduct.
C343-135	fixed		Several quest messages are inappropriate if the hero is blind.
C343-136	fixed		A samurai quest guardian message uses "ninja" where "ronin" is intended.
C343-137	fixed		Demons may demand money from (and get paid by) a fainted hero.
C343-138	fixed		Some spheres pick up objects and some don't.
C343-139	fixed		There's no feedback when an unseen drawbridge opens or closes.
C343-140	Fixed		Pets may continue eating after being paralyzed or falling asleep.
C343-141	fixed		Running, searching, and resting should stop wnen levitation ends.
C343-142	Fixed		Shopkeepers can be identified while hallucinating.
C343-143	Fixed		Leprechauns stealing gold from a mounted hero cause oddly worded messages.	See steal.c, line 51
C343-144	fixed		Creatures that can fit under doors can't fit through diagonal gaps.
C343-145	fixed		Mattock is mishandled when forcing locks.
C343-146	fixed		Unseen wand of striking becomes known if zapped by unseen monster and it hits a door.
C343-147	Fixed		The game panics if a magic trap tames a monster that just expelled the hero.
C343-148	Fixed		Changing locations while asleep lets you see objects or read engravings.
C343-149	Fixed		Polymorphed spellbooks don't behave as intended.	If the spell wasn't present in the spellcasting Z menu when you read the book, it is never blanked, regardless how many times it was already polymorphed. This bug also affects spells forgotten due to a non-blessed scroll of amnesia.
C343-150	fixed		Gender and/or size of some quest quest leaders and nemeses are wrong.	By Jonadab: The following do not have a gender specified (in monst.c): The Grand Master, The Arch Priest, The Minion of Huhetotl, Ixoth, Master Kaen, Nalzok, Scorpius, The Master Assassin, and the Dark One. I'm guessing some of those should have a fixed gender. As for the size, the encyclopedia entries for Orion and for the Norn seem to imply they should be larger (currently they are MZ_HUMAN, i.e., medium size).
C343-151	fixed		Monsters can teleport to or be created outside of legal area in special levels.	Examples are xorns off the map in Sokoban or ghosts on the edge of the map of the Astral Plane.
C343-152	Fixed		Using a cursed lamp while blind may give inappropriate messages.	If it fails to light, even a blind character will observe that it "flickers for a moment".
C343-153	Fixed		Player polymorphed into guardian naga spits the wrong kind of venom.
C343-154	fixed		Candles are fireproof.
C343-155	Fixed		Proper names may be incorrectly preceeded by "the" when hallucinating.
C343-156	Fixed		Reading scrolls may give redundant feedback messages.	Read cursed remove curse while confused: "As you read the scroll, it disappears." ... "The scroll disintegrates."
C343-157	fixed		Worms don't have scales.
C343-158	fixed		Krakens have tentacles.
C343-159	fixed		Stalkers have a head.
C343-160	fixed		Name "leather spellbook" is misleading.	Perhaps refers to "leather" spellbooks still being considered to be made of paper, i.e. you don't break vegan conduct if you eat one as a gelatinous cube.
C343-161	Fixed		A scroll of charging that has disappeared may still show in the list of things to charge.
C343-162	fixed	[4]	Using Magicbane may cause an ungrammatical message.	Possibly refers to monster names incorrectly being considered as plural forms, e.g. "Chops are confused." with a monster named "Chops" (source analysis)
C343-163	fixed		Antholes are mispopulated under some conditions.
C343-164	fixed		Cancelled nurses may give inappropriate messages.
C343-165	Fixed		Scroll of mail can be abused slightly.	Perhaps this refers to the fact shopkeepers will eventually start charging for mail if you pick up enough of them.
C343-166	fixed		Pits dug in vault guard's corridor don't get removed.
C343-167	Fixed		Length of time swallowed is sometimes calculated incorrectly.
C343-168	fixed		Shattering a monster's weapon doesn't work right if the weapon is part of a stack of more than one.
C343-169	Fixed		Autopickup fails during a failed untrap attempt.
C343-170	Fixed		Damage by silver weapons is sometimes higher than intended when hero is polymorphed.	Perhaps this refers to the fact players hit multiple times with the same weapon if polymorphed into a form with several weapon attacks, e. g. Aleax or marilith.
C343-171	Fixed	UnNetHack	Silver weapon damage message is sometimes missing when hero is polymorphed.
C343-172	fixed		Crash could occur when monster uses potion or food to cure stoning or confusion.
C343-173	fixed		Monster eating lizard corpse is not handled correctly.
C343-174	fixed	UnNetHack	Drum of earthquake gives inappropriate message if hero or monster is in a pit.
C343-175	fixed	UnNetHackPlus	Chatting to hostile prisoners may give an inappropriate message.	There is a bug in description of the bug - it applies to tame prisoners (MS_DJINNI is mostly OK, but tame one - "Sorry, I'm all out of wishes." is weird).
C343-176	fixed		Disintegration breath hitting equipment carried by monsters is not handled properly; if the monster life-saves the situation is worse; saddles are especially troublesome.	Archive of report on rgrn
C343-177	fixed		First false rumor is displayed as gibberish on some platforms.
C343-178	fixed		Wisdom is mishandled when rumors are used for random graffiti.
C343-179	fixed	Bilious #340	If a monster is killed by a drawbridge while carrying a potion of acid, the game may panic.
C343-180	fixed		In an obscure case on special levels, troll corpses may fail to revive and lizard corpses may revive.
C343-181	Fixed		The hero is welcomed to Delphi even if the Oracle was previously angered.
C343-182	fixed		Putting on the Eyes of the Overworld while blind gives an ungrammatical message.
C343-183	fixed		Jumping over an already seen trap may give an ungrammatical message.
C343-184	Open		Levitation via worn equipment is not implemented for monsters.
C343-185	fixed		No message is generated when attempting to name a monster that cannot be named by the player.
C343-186	fixed		Some messages referring to "priestess" say "priest."
C343-187	Fixed		Meditating monsters continue meditating when affected by something which wakes sleeping monsters.
C343-188	fixed		Specifying role and/or race and an invalid alignment in NETHACKOPTIONS or config file causes a misleading message.
C343-189	fixed		Temple donations and protection lost to gremlin attack interact incorrectly.	Specifically, a gremlin steals only the effectiveness of divine protection, not the amount.
C343-190	Fixed		Monsters can hide while trapped or holding the hero.
C343-191	fixed		When an unseen monster forces a polymorphed hero out of hiding, feedback is insufficient.
C343-192	fixed		If invocation is performed while hero is trapped, hero remains trapped.
C343-193	Fixed		Polymorphed hero can fall into water once and crawl out twice.
C343-194	Fixed		Saving and restoring a game while punished and swallowed sometimes loses the ball and chain.
C343-195	Fixed		Glass wand thrown and broken in a shop is not charged for.
C343-196	Fixed		Wielded light source may get missed by rust trap.
C343-197	fixed		Attacking a hidden monster sensed via ongoing monster detection is interrupted inapropropriately.
C343-198	fixed		Playing in a 20 or 21 line window can cause the game to crash.
C343-199	fixed		The database entry for "monk" has a typo.	There should be a comma after the quotation. Traditional typesetting would do this: "No," replied the monk. Modern style (developed within the last thirty years) might put the comma outside the quote.
C343-200	fixed		In the quest, it's possible to accidently skip the locate level	e. g. by falling down a hole several levels.
C343-201	fixed		Phrasing of message when one monster attacks another with stacked weapons is odd.
C343-202	Fixed		Pushing a boulder onto a level teleporter trap could cause repeated messages.
C343-203	fixed		Hero arriving on a very crowded level may land on a monster causing game state corruption and possibly a crash.
C343-204	Fixed		Hero grabbed or engulfed due to conflict should be released when conflict ends.
C343-205	Fixed		Changes in hallucination state are not reflected properly when also mimicing.
C343-206	fixed		Divine gifts resulting from #offer are identified when blind.	If Stormbringer is gifted to a blind character, it will still be described as a "black sword".
C343-207	fixed		Certain items that should never be created in Gehennom can be created there.
C343-208	fixed		Hero can be blinded while fainted.
C343-210	fixed		Hero can "feel a bit steadier" while unconscious.
C343-211	fixed		Engraving under water gives a poorly worded message.
C343-212	fixed		If the hero is killed by a thrown potion of burning oil, the game will panic.
C343-213	fixed		Display of stinking cloud may be incorrect when wearing Eyes of the Overworld.
C343-214	fixed		Monster escaping by changing levels in the wizard tower may end up outside the tower too easily.
C343-215	fixed		Elbereth is sometimes ignored by monsters.
C343-216	fixed		Fireproof containers catch fire in lava.
C343-217	Fixed		Missile which kills engulfer is temporarily lost when hero is expelled.
C343-218	fixed	Bilious #342	Applying a wielded cream pie can crash the game. This generalizes to wielded objects being destroyed.
C343-219	fixed		Hero can die due to "burned by burning" or "drowned by drowning."	A lot of similar combinations are possible by messing around with delayed_killer by stacking many delayed instadeaths on top of each other.
C343-220	Fixed		Eating a Rider corpse doesn't work quite right.	If you start eating it, die as a result, and lifesave, you can finish it safely. (The same thing happens to some other sort of corpses, like rotten ones, but not nearly as obviously.)
C343-221	Fixed		Jabberwocks do not always wake up when they should.
C343-222	Fixed		It's possible to end up wielding a cockatrice corpse when no longer polymorphed.
C343-223	fixed		Hidden pet can follow hero down stairs, remain hiding and show up as hidden monster. Also can happen with a magic whistle.
C343-224	fixed		Carrying too many items creates uselessly long prompts.	Using a WIZKIT allows player to have too large amount of items, what results in prompts with repeated # sign (for example on dropping items)
C343-225	fixed		Hero can sometimes carry too many boulders.
C343-226	Fixed		Inventory display doesn't mention unpaid items in a container the hero owns.
C343-227	fixed		Container dropped in a shop then moved to an untended shop behaves oddly.
C343-228	fixed		Cloak of magic resistance is active when it shouldn't be.
C343-229	Fixed		Hero can dip or apply grease to a worn item that is covered by another worn item.
C343-230	fixed		Drawbridges act differently depending on which direction they are pointing.
C343-231	fixed		Time is distorted while sinking into lava.	Because lava sinking is checked once per player input (inexplicably), as opposed to once per player turn or once per time-consuming action.
C343-232	fixed		Hero can be slimed while in lava.
C343-233	fixed		Hero polymorphed into Quantum Mechanic may get erroneous messages about disappearing monsters.	Moster teleported together with engulfed player: "%s suddenly disappears!". Monster teleported away, without player inside (happens in endgame) - no message.
C343-234	Fixed		Sacrifice on an altar can have unintended consequences.	Perhaps this refers to the fact the corpse of a former pet does not vanish.
C343-235	fixed		Casting spell of protection gives incorrect message if hero is swallowed or in rock.
C343-236	fixed		Engraving works in places it shouldn't.
C343-237	Fixed		The relationship between crossbow use and strength is wrong.
C343-238	fixed		(Unix and VMS only) The "Who are you?" prompt does not accept digits in the response.
C343-239	fixed		Engravings can transfer between a moat and a drawbridge.
C343-240	fixed		Hero can create a pit in air.
C343-241	Fixed		Hero is not charged for breaking the lock on a container owned by a shop.
C343-242	fixed		Shopkeepers and priests avoid graves when they should not.
C343-243	fixed	GruntHack	Hero can throw without hands.
C343-244	fixed		Sometimes you can eat artifacts you can't touch with your hands.
C343-245	fixed		Hero trying to kick beyond map edge is handled improperly.
C343-246	fixed		Engraving with an empty wand handles time wrong.	If you cancel the engraving text prompt or are levitating, no time is spent.
C343-247	fixed		A magic portal may be deactivated if the game is saved due to hangup while changing levels.	The official buglist mentions "Leave the level some other way then return to it." as a workaround.
C343-248	fixed	Bilious #257	You can't put candles in a candelabrum while underwater.
C343-249	fixed		There are a number of errors handling vomit; and real rats can't vomit.
C343-250	Open		Rust-causing targets can reveal other information about a weapon.
C343-251	fixed		Monsters sleeping due to being hit may wake up at the wrong time.
C343-252	fixed		There is a typo in the quote from "The Count of Monte Cristo."
C343-253	fixed		Choking on certain food items doesn't work properly.
C343-254	fixed		Shapechanger's don't take advantage of being mimics or hiders.
C343-255	fixed		Tinning on a full level fails improperly.
C343-256	fixed		Very very very long messages can cause a crash.
C343-257	fixed		Cursed corpses wielded by monsters are not handled properly.	Perhaps this refers to the fact wielded items are always dropped when a monster polymorphs.
C343-258	fixed		Grammar error in samurai quest: "wakarimasu?" instead of "wakarimasu ka?"
C343-259	fixed		"Dr. Dolittle" is spelled incorrectly.
C343-260	fixed		Ridden steeds are sometimes immune to gas traps.
C343-261	Fixed		Sleeping steeds can jump.
C343-262	fixed		Polyporph mis-handles a used and wielded leash.	Polyself into something that cannot wield (e.g. a hell hound). "You find you must drop your weapon!" This leaves an in-use leash on the ground. Your pet can even pick it up, carry it around, drop it, and it's still listed as "(in use)".
C343-263	Fixed		Probing may miss Schroedinger's cat.	The cat is created only when the container is opened, but should be when it is observed.
C343-264	fixed		"You must drop your weapon" may appear when it should not.	Maybe duplicate of C343-262?
C343-265	fixed		Force may work when hero can't reach lock being forced.
C343-266	fixed		Hero on drawbridge when it's destroyed is not handled properly.	Destroy a drawbridge by zapping a wand of striking or of digging downward while standing on the bridge. "The drawbridge collapses into the moat" without harming you, leaving you standing on the moat even if you are not properly equipped to stand there. Information has been posted to rgrn about the dev team's fix for this; to find the thread, search for phlebocratic postreticular apodiosis. ("It now calls spoteffects() for the hero or minliquid() for monsters. If the exposed terrain is water or lava, then the former bridge occupant will fall in (and hero might crawl out of the water); other under-bridge terrain is safe.")
C343-267	fixed		Game says monster speed changes even if monster can't move at all.
C343-268	fixed	Bilious #340	Used up potion of acid may end up in bones file.
C343-269	fixed		Bones file created after hero dies outside shop may mis-handle items.
C343-270	fixed		Dying in a shop while wielding two weapons may cause a warning message.
C343-271	fixed		Pet messages at the very end of the game may appear in the wrong place.
C343-272	fixed		Corrupted score file can crash the game.
C343-273	Fixed		Changing alignment and held artifacts interact incorrectly.	E. g. you still enjoy the when-carried benefits of artifacts you could not pick up due to your current alignment.
C343-274	fixed		Odd message when attempting to apply a wielded towel.
C343-275	fixed	Bilious #342	If a lit, wielded, candle or potion of oil burns out, the game may crash.
C343-276	fixed	Bilious #342	If a figuring auto-transforms while wielded or worn, the game may crash.
C343-277	Fixed		Wooden weapons don't always burn when they should.
C343-278	fixed		Quest leaders are too likely to be affected by traps.
C343-279	Fixed		Kicked arrows may get wrong bonuses.
C343-280	Fixed		Ranged polearm attack doesn't always work properly.
C343-281	Fixed		Kicking shop-owned food is not always accounted for correctly.
C343-282	Fixed		Damage calculation may be wrong when hero is polymorphed into a pudding.
C343-283	fixed		Long walks take a non-optimial path.
C343-284	Fixed		Activating a shop-owned figurine sometimes don't entail shop charges.	If you pick up and drop a cursed figurine, the timer will stay live. Will this eventually incur charges?
C343-285	Fixed		Water elementals can be trapped in a bear trap.
C343-286	Fixed		Polymorph and lycanthropy do not interact properly.
C343-287	fixed		Hero polymorphed into monster with kick attack doesn't get bonus from ring of increase damage when kicking.
C343-288	Fixed		The message "a monster appears" can show up when multiple monsters appear.
C343-289	fixed		If magical removal of a steed's saddle is fatal to the hero, the saddle may still be on the steed in a bones file.
C343-290	fixed		Rings do not show up in the "what do you want to charge?" prompt when they should.	Applies to oil lamps, too.
C343-291	Fixed		Backstab bonus interacts incorrectly with thrown weapons and two-weapon mode.	Two-weapon does not get backstab at all while each fired weapon does individually.
C343-292	Fixed		Touching a pile of objects while blind does not always work correctly.
C343-293	Fixed		There are a number of errors changing words between singular and plural forms.
C343-294	fixed		Orcs and gnomes do not respond to #chat when they should.
C343-295	fixed		Casting stone-to-flesh on self while wielding a figurine can cause the game to panic.
C343-296	Fixed		Sunsword doesn't work as expected against shades.
C343-297	fixed		Lit potion may survive hero dying from splattered oil burning on the floor.
C343-298	fixed		Kicking at "empty space" uses no time.
C343-299	fixed	UnNetHackPlus	Killing tame engulfer from inside gives a warning message.
C343-300	Fixed		Amulet of strangulation may kill forms that can't be strangled.
C343-301	fixed		Nymphs can steal things they can't pick up.	They can steal Rider corpses from gelatinous cubes. The bug might instead refer to nymphs stealing things that they don't naturally pick up, like potions.
C343-302	fixed		Amnesia of object discoveries may forget to forget one thing.	Thanks to read.c#line501 player doesn't forget anything when the "count * percent" is smaller than 50. In other words player that knows identify of single object will never loose memory of it via mind flayer attack.
C343-303	Fixed		Gem probabilities are not reset properly on level revisit.
C343-304	Fixed		Message given when damaging a closed drawbridge may refer to a wall.
C343-305	Fixed	GruntHack	Attacking with an applied polearm ignores the "confirm" option.
C343-306	Fixed		Engulfer under influence of conflict or confusion can swallow a monster and not be affected by water/lava/trap under monster until next turn.
C343-307	Fixed		Unicorn horn interacts incorrectly with ring of sustain ability.	Non-cursed restores, but cursed does not decrement attributes.
C343-308	Fixed		A hidden, dead monster can revive hidden under its own corpse.
C343-309	Fixed		Dropping Heart of Ahriman may give odd message sequence.
C343-310	Fixed		Applying an unpaid stack of potions of oil forces hero to buy all of them.
C343-311	Fixed		Price of unpack shop items may change when hero is forced to buy.	For example, hunger status has an effect on food prices.
C343-312	Fixed		Monster can attack with a polearm it was unable to wield.
C343-313	Fixed		"You trip over it" may appear even after you know what "it" is.
C343-314	Fixed		Drowning on the Plane of Water lists cause of death as "drowned in a moat."
C343-315	fixed		Small monsters dropping items due to weight use the wrong weights.
C343-316	fixed		Monsters who shouldn't will attack the Wizard to get the Amulet.	See also SC343-19.
C343-317	Fixed		Bones data can contain odd characters from player's dogname, catname, or fruit options; this can cause odd terminal-dependent behavior.	NetHack fails to sanitise characters taken from options.
C343-318	fixed		Opening or closing the castle drawbridge using music takes no time.
C343-319	Fixed		Grid bugs can be forced to move diagonally, e. g. by displacing a tame one.
C343-320	Fixed		Reading scroll of mail break illiterate conduct.
C343-321	Fixed		Hero and monsters can walk through a long worm's tail diagonally.
C343-322	Fixed		Forced attack on a boulder says "you attack thin air."
C343-323	Fixed		Objects dropped as a monster dies don't interact properly with the environment.	See also #362.
C343-324	fixed	Bilious #332	Cutting a long worm in two will crash the game if the cut takes the worm to 1 HP or if long worms had become extinct.
C343-325	Fixed		Hole in ice may be described as a "moat."
C343-326	Fixed		Open and close commands may give inappropriate feedback near a drawbridge.
C343-327	fixed		Message "suddenly you cannot see the" monster can be displayed when the monster remains visible for some reason.
C343-328	Fixed		Messages when opening a tin may imply implausible timing.
C343-329	fixed		A just-dead monster may still claim to be fleeing.
C343-330	Fixed		Wrong message may be delivered when seeing a pet eating.
C343-331	Open		Sleeping monster reacts to a mirror.
C343-332	Fixed		The message given when multiple potions of acid explode refers to a single potion.	Refers to stacks of acid exploding when you go for a swim.
C343-333	fixed		Vault guard asks hero's name while hero is engulfed.
C343-334	Fixed		Defining GOLDOBJ drops a slot from the inventory.
C343-335	fixed		Cloak of invisibility and blindness do not interact reasonably.
C343-336	Fixed		A shapechanger starting out in changed form gets incorrect inventory items.	They get items appropriate for their polymorphed form.
C343-337	Fixed		It's possible to create an object of 0 gold pieces.	You have to drop 4294967296 (MAXUINT+1) gold. Doing that twice crashes the game. Fixed on NAO.
C343-338	Fixed		Wizard-mode command sanity_check misses nested containers and migrating monsters.
C343-339	Fixed		Screen and time are not always updated properly when opening or closing doors while blind.
C343-340	Fixed		Secret door detection does not interact properly with features of the Planes of Water and Air.	The next version promises to make wands of secret door detection find portals even behind clouds (but not update the screen).
C343-341	Open		In minetown, it's possible to teleport into a room that requires digging to escape from.
C343-342	Fixed		Potion thrown by monster which hits long worm's tail says it hit its tail.
C343-343	Fixed		Helm of Opposite alignment gives incorrect piety level.	Currently, you retain your alignment record, e. g. it is possible to gain alignment for robbing a shop while chaotic and calming the shopkeeper while lawful.
C343-344	fixed		NetHack thinks jellyfish have heads.
C343-345	fixed	GruntHack	Attempting to remove cursed lenses gives a message with poor grammar.
C343-346	Fixed		Attempting to put on some items when the item is already wielded or quivered and failing for a variety of reasons gives a message with poor grammar.
C343-347	Fixed		Picking up and wearing an unknown ring while blind sometimes gives out too much information.	RGRN discussion
C343-348	Fixed		Exercise before polymorph may affect polymorphed character.
C343-349	Fixed		An identify scroll is wasted if space is typed and steps off the end of the inventory list.
C343-350	Fixed		Eels don't hide when they are supposed to.
C343-351	fixed	GruntHack	Alchemy-caused explosions don't wake nearby monsters.
C343-352	fixed		Secret doors in lit walls don't always display properly.
C343-353	Fixed		Aborting key or lock pick with escape uses a turn.
C343-354	Fixed		Probing while engulfed ignores the fact that the hero is in the monster.
C343-355	fixed	GruntHack	Archeologists start out at basic skill level in sling.	This is a side effect of their touchstone, which is considered sling ammunition.
C343-356	Fixed		Wearing an amulet of restful sleep confuses internal sleep state bookkeeping.	Perhaps related is the fact you can cure instrinsic restful sleep (from eating the amulet) by putting on and removing an amulet of restful sleep.
C343-357	Open		Rust monsters may chew non-ferrous items.
C343-358	Fixed		If no co-aligned artifacts are available for gifting when required, gifting fails repeatedly.	For example, this can mean trouble for elven priests who have named Sting and Orcrist in hopes of getting Stormbringer as their first sacrifice gift.
C343-359	fixed		Setting the fruit name fails if the new name is already known but happens to be not at the end of an internal list.
C343-360	fixed		A monster wearing a suit can still put on a shirt.	But they (correctly) have to take off cloaks first.
C343-361	Fixed		The message "you feel shuddering vibrations" does not always get displayed when it should.
C343-362	Fixed		Objects dropped during polymorph may be incorrectly polymorphed.
C343-363	Fixed		The case of monsters eating green slime corpses is not handled correctly.
C343-364	Fixed		If player's hand slips while naming an object, 'z' is never picked as the new letter.	Naming_artifacts?
C343-365	Fixed		Hero may remove armor for nymph or succubus while asleep.
C343-366	Fixed		Concealed mimic not always revealed when it should be.	A stethoscope will appraise but not uncloak a mimic. See also #SC343-17.
C343-367	Fixed		Fainting with a wielded cockatrice corpse doesn't behave as expected.
C343-368	Fixed		Blinded hero knows too much about a monster summoning insects.
C343-369	fixed		Mounted hero on life-saved steed gets repeated warning messages until hero dismounts.
C343-370	Open		Travel (_) command can get stuck trying to plot a path past an interesting dungeon feature, for example, a trap or fountain.
C343-371	Fixed		Stethoscopes can sometimes be used more often than intended.	If you save and resume, you can use it again for free. On an aside, saving and restoring loses the movement points you gain from speed, and makes your exercise prior to the save worth less.
C343-372	Fixed		A fatal explosion can give the player messages in the wrong order if carried items are destroyed.
C343-373	Fixed		Shopkeepers can polymorph into forms that don't let them do their jobs.	A blue jelly shopkeeper will buy and sell, but it won't move to block or unblock the door.
C343-374	Fixed		When polymorphed into a grid bug, attempting to move in an illegal direction is handled ungracefully.
C343-375	Fixed		A mimic posing as a statue is not handled properly.
C343-376	fixed		When trying to move down, Hero can be levitating and stuck in the floor at the same time.
C343-377	Fixed		Hero hidden from monster is still treated as a normal target for range attack.
C343-378	Fixed		Hero hiding as a small mimic can end up stuck to a monster after returning to human form.
C343-379	Fixed		Spelling errors "sprit" and "truely" in quest text.
C343-380	fixed		Mimics pretending to be doors show up on the Rogue level.
C343-381	Fixed		Attacking by applying a polearm doesn't scuff engraving under hero.
C343-382	Fixed		Auto-wielding a polearm may take no time.	Does this also apply to pick-axes when you start digging?
C343-383	Fixed		Applying a bullwhip while hero is at edge of map may cause a panic or crash.
C343-384	fixed		Cutting a level 0 long worm in half may lead to a worm with 0 HP, which may cause a crash.	Fixed on NAO.
C343-385	Fixed		D command doesn't handle u choice correctly if only unpaid items are inside containers.
C343-386	Fixed		Pearl rings can rust.
C343-387	Fixed		T-shirts can be read when covered.
C343-388	Fixed		Spell damage and low intelligence interact incorrectly.
C343-389	Fixed		Dragon breath and certain other effects hitting a hidden secret door does not damage it.
C343-390	Fixed		Breaking a wand which may zap but not damage a door gives an odd message.
C343-391	fixed		Hero polymorphed into a mimic with #monster and hiding as an object does not unhide when polymorphing into a non-mimic.	The same applies to pet mimics whistled over a polytrap.
C343-392	Fixed		A stunned monster may both walk away from the hero and keep holding him.
C343-393	Fixed		The messages produced when throwing a poisoned weapon which loses its poison are in a confusing order.
C343-394	fixed	Bilious #340	Throwing a potion of acid into water may panic the game.	"may" == "will". Related to C343-19, -179 and -268.
C343-395	Not a bug		Spelling errors at the genocide prompt may have unintended consequences.	Specifically, genociding "master mindflayer" as a monk is fatal.
C343-396	Fixed		Shopkeeper does not charge hero for an unsold boulder that is destroyed with a pick-axe.
C343-397	fixed		A badly formed message may be produced if a pick-axe is applied to a boulder and the boulder is removed by a monster.
C343-398	fixed		The game may crash if a wielded potion of polymorph is drunk.
C343-399	fixed		Messages referring to a named vault guard have grammatical errors.
C343-400	Fixed		Wearing a cloak of displacement identifies it even if hero can't see.
C343-401	Fixed		Wearing an elven cloak identifies it even if hero is already stealthy.
C343-402	Fixed		Putting on a ring of stealth never identifies it.	A workaround is to check if putting on elven boots gives a message.
C343-403	Fixed		Hero can write a scroll not sufficiently identified.	You can write any scroll you have named, even if you don't know the "scroll called FOOBIE NO IDEA" is the scroll you are trying to write. (original report)
C343-404	Fixed		Writing a scroll can give a badly phrased message if the scroll is known by its appearance.
C343-405	Fixed		Some quest artifacts are too easily affected by stone-to-flesh.	The Heart of Ahriman
C343-406	Fixed		One of the coyote names is spelled wrong.	Nemesis ridiculii (from Soup or Sonic) is misspelled as Nemesis riduclii.
C343-407	Fixed		If reading an unknown scroll of teleport puts the hero on another scroll of teleport, the second one is still treated as unknown.
C343-408	Fixed		Being killed by a monster with a long name can send the game into an infinite loop.
C343-409	Fixed		Unlocking a mimic pretending to be a door is not handled properly.	(original report)
C343-410	Fixed		Using an unlocking tool on a boulder that's really a mimic and located in a doorway is not handled properly.
C343-411	Fixed		A purple worm can end up in wall or rock when swallowing a ghost or xorn.
C343-412	Fixed		Unpaid shop items stolen from hero remain on hero's bill.
C343-413	Fixed		While blind, some actions resulting in "Wait! That's a monster!" for a mimic posing as a door do not update the display correctly.
C343-414	Fixed		#untrap of a known trap location with a concealed mimic gives correct message but does not update the display.
C343-415	Fixed		Mail daemons can be created when populating special levels with demons.	Vlad's Tower is such a place.
C343-416	Fixed		Being disintegrated by divine wrath gives an inappropriate message.
C343-417	Fixed		Polymorphing into a human form may give a message with the wrong gender.
C343-418	fixed		Weight of non-cursed bag of holding is sometimes off by one.	Possibly, this refers to multiple stacks of gold in any bag: two stacks of $49 weigh 0, but one stack of $98 weighs 1. This might relate to shop-owned versus hero-owned gold.
C343-419	fixed		With option number_pad set to 2, M + 5 (or Alt + 5 or Shift + Keypad5) does not work as the G movement prefix.
C343-420	Fixed		Kops may not be dismissed if the shopkeeper changes levels.	You might want to pacify the shopkeeper on his home level. If necessary, steal a gold piece and pay him off again.
C343-421	fixed		Object teleport in and around the Wizard's Tower doesn't work as intended.	(original report)
C343-422	Fixed		There are inconsistencies in damage applied to objects when encountering lava in different ways.
C343-423	Fixed		Under some circumstances player can tell if bones file is created.	"Your body rises from the dead as <monster>..." if killed by a slime/W/V/M.
C343-424	fixed		Unlit candelabrum becomes unlightable if candles have exactly one turn of fuel left and it was applied in the wrong location.
C343-425	fixed		If a steed's legs are wounded while being ridden and the hero dismounts before the legs heal, the hero's dexterity will stay reduced.	(original report)
C343-426	Fixed		A polymorphed hero hiding on the ceiling may be forced to drop to an inappropriate position.	(original report)
C343-427	Fixed		Inappropriate message claiming a paralyzed monster "turns to flee" may appear.
C343-428	Fixed		Statues in a cockatrice nest are wrong type if the score file is empty.	(original report)
C343-429	fixed		When using a display that scrolls the map, teleporting hero may display off the map momentarily.
C343-430	Fixed		It's too easy to open tins.
C343-431	Fixed		Killing a vault guard results in a message about "dropping minvent."
C343-432	Fixed		In a vault corridor: some traps could be left lying around.
C343-433	Fixed		In a vault corridor: you can end up with lighted rock.
C343-434	Fixed		In a vault corridor: when blind, you can be stuck and not be told why.
C343-435	Fixed		In a vault corridor: various kinds of problems may result from having an iron ball.
C343-436	Fixed		Hero can levitate and fly where it makes no sense.
C343-437	Fixed		Gremlins sometimes don't respond properly to light.
C343-438	fixed		Typo "gold piecess" may occur when selling items in a container.
C343-439	fixed		Running NetHack in a terminal window with more than 255 rows or columns produces display errors.
C343-440	Fixed		If the game panics with the hero underwater, the hero may be restored on top of the water.
C343-441	Fixed		Autosearching while blind doesn't update the map when it should.
C343-442	Fixed		Drain life shouldn't override drain resistance of objects.

Spoiler core bugs

Name	Status	Patch	Description	Additional info
SC342-3	Fixed		Hangup can be used to cheat.	If you are slowly turning to stone and trigger a hangup after you are already immobile, you will be granted one action on restoring.
SC343-1	Fixed		Monsters that can't blow can still use a whistle.	You can also use whistle with active amulet of strangulation
SC343-2	fixed		If you are poison resistant, potions of sickness can only kill you if they are blessed.
SC343-3	fixed		Water walking boots are not handled properly on lava.
SC343-4	Fixed		Reviving corpses or reanimating statues in a shop does not get charged correctly.
SC343-5	fixed		Breaking container contents in a shop doesn't always charge for them.
SC343-6	fixed		Stealing a stack of items from a shop sometimes results in only being charged for one.
SC343-7	fixed		Zapping an unknown wand while blind sometimes gives out too much information.
SC343-8	fixed		Re-animating a statue containing gold produces too much gold.	Works on former pets, shopkeepers, and other "special" statues. See the TAS writeup.
SC343-9	Fixed		Medusa corpse from a level file behaves incorrectly.
SC343-10	Fixed		Player can raise HP and Pw by dancing with vampires.	This is the infamous polyself bug.
SC343-11	fixed	Bilious #337	It's possible to easily find the identity of a high priest on the Astral plane.	This is the infamous Astral call bug.
SC343-12	fixed	Bilious #337	Hero using telepathy can abuse Call on the Astral Plane.
SC343-13	Open		While blind and levitating, too much information may be presented.	Does this refer to messages about monsters scared by an Elbereth engraving? Or typing > to identify the stairs?
SC343-14	Fixed		Shopkeepers and priests may be teleported out of their shop or temple too easily.
SC343-15	Fixed		Nurses are not stoned by hero polymorphed into cockatrice.
SC343-16	fixed		Gelatinous cubes can engulf Rider corpses.
SC343-17	Fixed		Stethoscope may unhide hidden mimic.
SC343-18	fixed		Escaping from lava can leave hero outside of time.	Nobody knows how to exploit this, please don't ask.
SC343-19	fixed		Monsters seeking the Amulet attack temple priests to get it.
SC343-20	fixed		Hangup save while picking up gold in a shop may duplicate the gold.
SC343-21	fixed		Accounting is incorrect for containers dropped in a shop that does not sell them.
SC343-22	Fixed		The travel command allows grid bugs to move one step diagonally.

Windows-only bugs

Name	Status	Patch	Description	Additional info
W341-13	Fixed		"Lock Windows" menu item has wrong checkmark at startup
W341-14	Fixed		Message window does not update properly if resized.
W342-6	Not a bug		Checkboxes are drawn wrong.
W343-1	fixed		Redirecting score output through a pipe doesn't work.
W343-2	Not a bug		Windows 98 is unable to load tiles that are too large. This is an OS issue.
W343-3	fixed	Bilious #313	Under the Polish version of Windows 2000 SP4, screen output with a raster font shows wrong characters for many dungeon features.
W343-4	fixed	Bilious #313	Keyboard may stop responding after locking or unlocking a door when using altkeyhandler=nhraykey.dll
W343-5	Fixed		Error messages early in the game startup sequence may flash by unreadably.
W343-6	Fixed		Attempting to start NetHack from within a zip utility doesn't work (this is not a bug) and gives a misleading error message panic Cannot open dungeon description - "dungeon" (this is the bug).	Go back to the installation instructions and finish the install.
W343-7	Open		Using both nethack.exe and nethackW.exe can cause nethackW.exe to display the top scores list in a series of windows.

X11-only bugs

Name	Status	Description
X343-1	fixed	The scrollbar for a text window may be missing when needed.
X343-2	fixed	use_inverse is broken in tty mode.
X343-3	fixed	Sanity check for mouse position after window resize is wrong.

Linux-only bugs

Name	Status	Description
L343-1	fixed	Window resize is not supported by default.

Macintosh-only bugs

Name	Status	Patch	Description	Additional info
M343-1	fixed	DevTeam	Release code does not build under Carbon.	This patch does not apply cleanly.
M343-2	Open		nethack-343-mac-term.pkg.sit only: "No write permission to lock perm!" error. Only happens on clean installs of 10.3.x (not upgraded systems). (See M343-3 for 10.4.)
M343-3	Open		nethack-343-mac-term.pkg.sit only: "No write permission to lock perm!" error. Only happens on 10.4 (See M343-2 for 10.3.)
M343-4	Open		In the Qt port, Command + Z crashes the game and prevents it from restarting.

Qt-only bugs

Name	Status	Description
Q341-1	Fixed	Randomly generating characters doesn't always follow user requests.
Q341-3	Open	[Mac only] q and / keys send additional characters when pressed.
Q343-1	Open	Explore or debug mode only: ctrl + x doesn't show the intrinsics screen.
Q343-2	fixed	Saved games are not found if the game is built with the prefix option.

Windows-CE-only bugs

Name	Status	Description
CE343-1	Not a bug	Attempting to load an alternative tile set fails.
CE343-2	fixed	Help text windows close immediately.
CE343-3	fixed	Action button points to wrong screen location.
CE343-4	fixed	pocketpc: menu window closes if scrolled off top or bottom
CE343-5	fixed	Input is translated when command helper is hidden.
CE343-6	fixed	Text window does not scroll left on left arrow.

Build-from-source bugs

Name	Status	Description
S343-1	Open	gnome port refers to file t32-1024.xpm for large tiles that doesn't exist
S343-2	fixed	1x1 room in special level can trigger panic due to off by one error (does not affect official room set)
S343-3	fixed	makedefs may fail to compile if sizeof(time_t) != sizeof(long)
S343-4	fixed	NetHack does not compile under Microsoft VC2005.
S343-5	fixed	The prototype and definition for finish_map don't match properly.
S343-6	fixed	Game does not compile under FreeBSD 6.1.
S343-7	fixed	DLB doesn't work under VMS if a file used by NetHack and without a dot in its name matches a VMS logical name.
S343-8	fixed	NetHack does not compile under Microsoft VS2008 Express Edition.
S343-9	fixed	If time_t changes from 32- to 64-bits due to (e.g.) compiler upgrades, save files will not be compatible between old and new builds.
S343-10	fixed	Windows 64-bit mode compile produces warnings in random.c.
S343-11	fixed	Smartphone keyboard does not work. (Possible reference to: The XDA Cosmo aka HTC S620 is a Windows Mobile smartphone with a keyboard, yet Nethack insists on mapping every command to the twelve keys 0-9*#.)
S343-12	Fixed	Game may fail to compile or give warnings if sizeof(char *) != sizeof(int).

Bugs not mentioned on the DevTeam's website

Name	Patch	Description
C343-204		The hero can teleport on a non-teleport level: Get engulfed by a tame engulfer using conflict, end conflict, apply a magic whistle.
		The boulder from a rolling boulder trap can be generated on top of a lava pool.
		It is impossible to paste (e. g. "ElberethElbereth") into the windows tiles build. This works on OS X, however.
		The game sometimes behaves as if a series of spurious non-attacking movement commands were typed after #looting a container.
		Confused #looting a throne does not destroy it.
		The "hilite_pet" option does not work on monsters only seen due to the monster detection spell.
C343-391 ?		Polymorphing a cloaked pet mimic (by whistling it onto a polytrap) does not unhide it, even if it turns into a non-mimic.
		You can reliably trigger clairvoyance (donation, cornuthaum, Amulet) by far-looking ; or wall-walking on turns divisible by 15 until your surroundings are mapped.
		Killing a monster with a rolling boulder trap breaks pacifist conduct if and only if the trap was not known.
	"L" (Leon Arnott)	You can't bribe the watch. It's debatable if this qualifies as a bug.
		Jabberwocks can wield things and hit monsters with them, but monsters will not get petrified, take silver damage, etc. (Report)
		Declining to attack a peaceful monster still burns nutrition without using up the turn.
		Declining to kick a peaceful monster still uses up a turn and wakes nearby monsters.
		Turns do not alternate correctly if the player has 24 movement energy exactly, and a monster has at least 24 movement energy. (Report)
		Having multi-turn armor stolen by a nymph or monkey while you're putting on a helm of brilliance or gauntlets of dexterity can leave your current and maximum stats permanently affected.
		Lifesaving during slow engraving causes the engraving to appear on the ground before it should be completed, but (even if an Elbereth) not be effective at scaring monsters until it would have been completed. (rgrn post) Teleportitis while engraving has a similar effect: at the new location, you still work on the engraving on the old spot.
	GruntHack	Prayer does not protect from stinking cloud. (rgrn post by Grunt)
		While using #twoweapon, if slippery fingers cause both weapons to slip from your hands, on the same turn, the messages can seem rather odd. (rgrn post)
		Praying or fainting resets the "sound" option to true.
		Freshly slain corpses stack inconsistently: Say there is a stale stack of corpses on your altar. A way of making the fresh corpses created not get 'oldified' by the existing stale stack is to blind yourself when killing the new puddings; somehow this causes the newly generated corpses to be in a different stack.
		Moving with the m or HJ... commands into a warning symbol attacks (and stones you if applicable) if and only if it does not cover up an I known from previous searching or movement. (see also: m, todo: document at cockatrice, warning, stethoscope.) Things are even more complicated if you are blind, or if there are invisible monsters you can't see. Testing a blind player with a peaceful shopkeeper: If you apply a stethoscope and it says Akalapi is there, and then "you move into it", without "Pardon me, Alikapi.", and he doesn't get angry.
		If you rename the statue or corpse of a unique monster, then reanimate/revive it, the unique monster will keep its new name permanently (and also gain a "the" prefix if its actual name has one).
		Wielding or alternate-wielding or quivering a potion of blindness will make you resist blindness from yellow lights and archons. (report)
		If the player dies and is lifesaved, then the game will leave them helpless until the next turn, except if they were repeating a command using a numerical prefix and at least one more repeat is left, in which case they are not left helpless and (if they died while performing the action, rather than on a monster turn) the movement energy used to perform the action is refunded.
		Picking up gold doesn't honor the setting of pickup_burden if the game is compiled without GOLD_OBJ (no prompt when the encumbrance level is exceeded).
		Demon gating produces somewhat more incubi than succubi, especially on lower dungeon levels. Cause: Makemon.c#line1352. (User:Ilmari Karonen computed exact number some time ago.)
		A SUBROOM with random size and location is always generated at the top or left edge of the parent ROOM.
	Fix from Pat Rankin	impossible() can mangle the parameter values.
		Jumping into portals with an item immediately before the portal prints messages out of order, and also autopickups the item (despite jumping over items not normally picking them up). (report)
		The travel command gets interrupted by engravings, even by dust engravings while blind. In every other respect, the game behaves as if you cannot feel the dust engraving while blind. (first observed by JoveHack)
	UnNetHackPlus (note preceding refactoring	Statues/figurines of golems hit with stone-to-flesh spell are supposed to turn into flesh golems, not meatballs.
		A player vampire lord who is wearing water walking boots and polymorphs into a non-flying form, will wet his stuff despite wearing water walking boots. A potion of levitation prevents this. (original report, source pointer, see also C343-193)
	UnNetHackPlus	Stethoscope reports unaligned monsters as chaotic
	UnNetHackPlus	Missing foo_on/foo_off calls for objects with strange delay values (this bug was not detectable by players, but after adding special effects for wearing affected armor [for example: fedora] code was not working properly)
	UnNetHackPlus	Color of mithril objects is wrong
	UnNetHackPlus	Four shopkeeper names disappeared in NetHack 2.2a (report).
	UnNetHackPlus	Player polymorphed into gremlin may multiply on fountain during levitation.
formerly C343-209		some testing: I threw 13 daggers at a fog cloud from inside; on the 13th dagger, "You destroy the fog cloud! You see here 12 blessed +0 daggers." but after that there were 13 daggers (as confirmed by the : command, too). So at least the message is wrong, even if the dagger isn't really lost.
		Wands of teleportation do not auto-identify when you zap yourself.
		Corpse stacking ignores age. Easy to test with sacrificing - produce lizard corpse, drop on altar, wait till it is too old for sacrificing, produce new lizard corpse, drop it on altar. Corpses will stack and both will be too old for sacrifice. Now produce next lizard corpse and sacrifice it to confirm that "Nothing happens" is caused by old age of offered corpse.
		Pick up unpaid oil potion in shop, lit it, pay Fuel Tax, drop and sell it for more than you lost on Fuel Tax

References

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