ASSERT(num_heads > 0) in 'mon-info.cc' at line 983 failed.

Version: Dungeon Crawl Stone Soup 0.18-a0-1041-gbe91bf5
Platform: unix
Bits: 64
Game mode: normal
Tiles: online

Command line: /usr/games/crawl-git-be91bf5134 -name Lightli -rc /dgldir/rcfiles/crawl-git/Lightli.rc -macro /dgldir/rcfiles/crawl-git/Lightli.macro -webtiles-socket /crawl-master/webserver/sockets/Lightli:dcss-git.sock -morgue /dgldir/morgue/Lightli/ -wizard

RC options:
restart_after_game = false


Crash caused by signal #6: Aborted

Obtained 19 stack frames.
/usr/games/crawl-git-be91bf5134(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5be9b3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-be91bf5134(_Z13do_crash_dumpv+0x2f2) [0x5c5c82]: do_crash_dump()
/usr/games/crawl-git-be91bf5134(_Z20crash_signal_handleri+0x9c) [0x5bec4c]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f575e7f64c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f575eb8cb7b]: 
/usr/games/crawl-git-be91bf5134() [0x5c5459]
/usr/games/crawl-git-be91bf5134() [0x5c5701]
/usr/games/crawl-git-be91bf5134(_ZNK12monster_info11common_nameE22description_level_type+0xa35) [0x89d4e5]: monster_info::common_name(description_level_type) const
/usr/games/crawl-git-be91bf5134(_ZNK12monster_info9full_nameE22description_level_typeb+0xce) [0x89d7ae]: monster_info::full_name(description_level_type, bool) const
/usr/games/crawl-git-be91bf5134(_ZNK12monster_info9to_stringEiRSsRibPKc+0x29a) [0x89db4a]: monster_info::to_string(int, std::string&, int&, bool, char const*) const
/usr/games/crawl-git-be91bf5134() [0x92aaaf]
/usr/games/crawl-git-be91bf5134(_Z19update_monster_panev+0x1cf) [0x92afaf]: update_monster_pane()
/usr/games/crawl-git-be91bf5134(_Z10viewwindowbbP9animation+0x40c) [0xaa5ddc]: viewwindow(bool, bool, animation*)
/usr/games/crawl-git-be91bf5134() [0xb726e8]
/usr/games/crawl-git-be91bf5134() [0xb7aaaf]
/usr/games/crawl-git-be91bf5134() [0xb7bbf5]
/usr/games/crawl-git-be91bf5134(main+0x33b) [0xb7edeb]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f575e7e176d]: 
/usr/games/crawl-git-be91bf5134() [0x51d729]

Trying to run gdb.
GNU gdb (Ubuntu/Linaro 7.4-2012.02-0ubuntu2) 7.4-2012.02
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f575eb8c84e in waitpid () from /lib/x86_64-linux-gnu/libpthread.so.0
#0  0x00007f575eb8c84e in waitpid () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#1  0x00000000005bf0bb in call_gdb(_IO_FILE*) ()
No symbol table info available.
#2  0x00000000005c5ca2 in do_crash_dump() ()
No symbol table info available.
#3  0x00000000005bec4c in crash_signal_handler(int) ()
No symbol table info available.
#4  <signal handler called>
No symbol table info available.
#5  0x00007f575eb8cb7b in raise () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00000000005c5459 in ?? ()
No symbol table info available.
#7  0x00000000005c5701 in AssertFailed(char const*, char const*, int, char const*, ...) ()
No symbol table info available.
#8  0x000000000089d4e5 in monster_info::common_name(description_level_type) const ()
No symbol table info available.
#9  0x000000000089d7ae in monster_info::full_name(description_level_type, bool) const ()
No symbol table info available.
#10 0x000000000089db4a in monster_info::to_string(int, std::string&, int&, bool, char const*) const ()
No symbol table info available.
#11 0x000000000092aaaf in ?? ()
No symbol table info available.
#12 0x000000000092afaf in update_monster_pane() ()
No symbol table info available.
#13 0x0000000000aa5ddc in viewwindow(bool, bool, animation*) ()
No symbol table info available.
#14 0x0000000000b726e8 in ?? ()
No symbol table info available.
#15 0x0000000000b7aaaf in ?? ()
No symbol table info available.
#16 0x0000000000b7bbf5 in ?? ()
No symbol table info available.
#17 0x0000000000b7edeb in main ()
No symbol table info available.

Compilation info:
<<<<<<<<<<<
Compiled with GCC 4.7.3 on Jan 18 2016 at 01:16:10
Build platform: x86_64-linux-gnu
Platform: x86_64-linux-gnu
CFLAGS: -O2 -ggdb -pipe -DUSE_TILE -DUSE_TILE_WEB -Wall -Wformat-security -Wundef -Wno-array-bounds -Wno-format-zero-length -Wmissing-declarations -Wredundant-decls -Wno-parentheses -Wwrite-strings -Wshadow -pedantic -Wuninitialized -Iutil -I. -isystem /usr/include/lua5.1 -Irltiles -isystem /usr/include/ncursesw -g -DDEBUG_STATISTICS -DDEBUG -DWIZARD -DASSERTS -DCLUA_BINDINGS -DDGAMELAUNCH -DSAVE_DIR_PATH="/crawl-master/crawl-git-be91bf5134/saves" -DSHARED_DIR_PATH="/crawl-master/crawl-git/saves" -DDATA_DIR_PATH="/crawl-master/crawl-git-be91bf5134/data/" -DWEB_DIR_PATH="/crawl-master/crawl-git-be91bf5134/data/web/"
LDFLAGS: -rdynamic -fuse-ld=gold -O2 
>>>>>>>>>>>

Place info:
branch = 0, depth = 1

Level id: D:1
Level build method = random_map_for_place, level layout type  = rooms, absdepth0 = 0
Level vaults:
    scummos_arrival_forest
    layout_basic

Markers:
<<<<<<<<<<<<<<<<<<<<<<
Marker 0 at (59, 38): feature (stone_stairs_up_i)
>>>>>>>>>>>>>>>>>>>>>>

Messages:
<<<<<<<<<<<<<<<<<<<<<<
Welcome, Lightli the Human Ice Elementalist.
Will you be the one to retrieve the fabulous Orb of Zot from the depths?
Press ? for a list of commands and other information.
Found 25 stones.
Found a staircase leading out of the dungeon.
Unknown command.
WARNING: ABOUT TO ENTER WIZARD MODE!
If you continue, your game will not be scored!
Do you really want to enter wizard mode? (Confirm with "yes".) 
Okay, then.
WARNING: ABOUT TO ENTER WIZARD MODE!
If you continue, your game will not be scored!
Do you really want to enter wizard mode? (Confirm with "yes".) 
Okay, then.
WARNING: ABOUT TO ENTER WIZARD MODE!
If you continue, your game will not be scored!
Do you really want to enter wizard mode? (Confirm with "yes".) 
Enter Wizard Command (? - help): 
Which card? 
Unknown card.
Enter Wizard Command (? - help): 
Not a Wizard Command.
Unknown command.
Enter Wizard Command (? - help): 
Not a Wizard Command.
Enter Wizard Command (? - help): 
Okay, then.
Enter Wizard Command (? - help): 
) - weapons     ( - missiles  [ - armour  / - wands    ?  - scrolls
= - jewellery   ! - potions   : - books   | - staves   \  - rods
} - miscellany  X - corpses   % - food    $ - gold     0  - the Orb
ESC - exit
What class of item? X
Which monster by name? 
How many heads? 31412341
Something appears at your feet!
There is a staircase leading out of the dungeon here.
You see here a hydra corpse.
Enter Wizard Command (? - help): 
Cast which spell? 
You call on the dead to rise... The dead are walking!
Press: ? - help, v - describe, . - travel
Here: a 20597-headed hydra zombie (friendly)
A staircase leading out of the dungeon.
Unknown command.
You swap places.
There is a staircase leading out of the dungeon here.
There is a fountain of clear blue water here.
Found a scroll labeled ZUXZAM UPERERCH.
Enter Wizard Command (? - help): 
Which monster by number? 93
A fire crab comes into view.
You swap places.
What do you say?
 t - Shout!
Orders for allies: a - Attack new target.
                   r - Retreat!             s - Stop attacking.
                   w - Wait here.           f - Follow me.
 Anything else - Stay silent.
Gang up on whom?
Press: ? - help, Dir - move target cursor, f - fire crab
Aim: a fire crab (resting)
Attack!
Your 20597-headed hydra zombie barely misses the fire crab. x2
Your 20597-headed hydra zombie bites the fire crab but does no damage.
Your 20597-headed hydra zombie bites the fire crab.
Your 20597-headed hydra zombie barely misses the fire crab.
Your 20597-headed hydra zombie bites the fire crab!
Your 20597-headed hydra zombie closely misses the fire crab.
Your 20597-headed hydra zombie barely misses the fire crab.
Your 20597-headed hydra zombie bites the fire crab!
Your 20597-headed hydra zombie bites the fire crab but does no damage.
Your 20597-headed hydra zombie closely misses the fire crab.
Your 20597-headed hydra zombie barely misses the fire crab.
Your 20597-headed hydra zombie bites the fire crab!
Your 20597-headed hydra zombie bites the fire crab.
Your 20597-headed hydra zombie bites the fire crab but does no damage. x2
Your 20597-headed hydra zombie bites the fire crab! x2
The fire crab dies!
Your Dodging skill increases to level 3!
Your Spellcasting skill increases to level 3!
Your Ice Magic skill gained 2 levels and is now at level 5!
You have reached level 2!
You have reached level 3!
Your experience leads to an increase in your attributes!
Increase (S)trength, (I)ntelligence, or (D)exterity? 
You feel clever.
You have reached level 4!
You feel stronger.
You have reached level 5!
You have reached level 6!
Your experience leads to an increase in your attributes!
Increase (S)trength, (I)ntelligence, or (D)exterity? 
You feel clever.
Unknown command.
Unknown command.
What do you say?
 t - Shout!
Orders for allies: a - Attack new target.
                   r - Retreat!             s - Stop attacking.
                   w - Wait here.           f - Follow me.
 Anything else - Stay silent.
Wait here!
Enter Wizard Command (? - help): 
) - weapons     ( - missiles  [ - armour  / - wands    ?  - scrolls
= - jewellery   ! - potions   : - books   | - staves   \  - rods
} - miscellany  X - corpses   % - food    $ - gold     0  - the Orb
ESC - exit
What class of item? X
Which monster by name? 
How many heads? 83888
Something appears at your feet!
You see here a hydra corpse.
Casting: Freeze
Confirm with . or Enter, or press ? or * to list all spells.
Okay, then.
Enter Wizard Command (? - help): 
Cast which spell? 
You call on the dead to rise... The dead are walking!
You swap places.
Enter Wizard Command (? - help): 
) - weapons     ( - missiles  [ - armour  / - wands    ?  - scrolls
= - jewellery   ! - potions   : - books   | - staves   \  - rods
} - miscellany  X - corpses   % - food    $ - gold     0  - the Orb
ESC - exit
What class of item? X
Which monster by name? 
How many heads? 65536
Something appears at your feet!
There is a fountain of clear blue water here.
You see here a hydra corpse.
There is a fountain of clear blue water here.
Enter Wizard Command (? - help): 
Cast which spell? 
You call on the dead to rise...
The headless hydra corpse sways and immediately collapses!
Nothing appears to happen.
You swap places.
You see here a hydra corpse.
You swap places.
You see here a hydra corpse.
There is a fountain of clear blue water here.
Enter Wizard Command (? - help): 
Which monster by number? 
Okay, then.
Enter Wizard Command (? - help): 
) - weapons     ( - missiles  [ - armour  / - wands    ?  - scrolls
= - jewellery   ! - potions   : - books   | - staves   \  - rods
} - miscellany  X - corpses   % - food    $ - gold     0  - the Orb
ESC - exit
What class of item? X
Which monster by name? 
How many heads? 65535
Something appears at your feet!
Enter Wizard Command (? - help): 
Cast which spell? 
You call on the dead to rise...
The headless hydra corpse sways and immediately collapses!
The dead are walking!

>>>>>>>>>>>>>>>>>>>>>>

Game state:

mouse_enabled: 0, waiting_for_command: 0, terminal_resized: 0
io_inited: 1, need_save: 1, saving_game: 0, updating_scores: 0:
seen_hups: 0, map_stat_gen: 0, type: 1, arena_suspended: 0

prev_cmd = CMD_WIZARD
repeat_cmd = CMD_NO_CMD

Player:
{{{{{{{{{{{
Name:    [Lightli]
Species: Human
Job:     Ice Elementalist

HP: 41/41; mods: 0/0
MP: 6/10; mod: 0
Stats: 9 (9) 17 (17) 13 (13)
Position: (58, 38), god: No God (0), turn_is_over: 0, banished: 0
Standing on/in/over feature: floor

Skills (mode: auto)
Name            | can_train | train | training | level | points | progress
Fighting        |     X     |   1   |     0    |    0  |      0 | 0/50
Short Blades    |           |   1   |     0    |    0  |      0 | 0/50
Long Blades     |           |   1   |     0    |    0  |      0 | 0/50
Axes            |           |   1   |     0    |    0  |      0 | 0/50
Maces & Flails  |           |   1   |     0    |    0  |      0 | 0/50
Polearms        |           |   1   |     0    |    0  |      0 | 0/50
Staves          |           |   1   |     0    |    0  |      0 | 0/50
Slings          |           |   1   |     0    |    0  |      0 | 0/50
Bows            |           |   1   |     0    |    0  |      0 | 0/50
Crossbows       |           |   1   |     0    |    0  |      0 | 0/50
Throwing        |     X     |   1   |     0    |    0  |      0 | 0/50
Armour          |     X     |   1   |     0    |    0  |      0 | 0/50
Dodging         |     X     |   1   |    15    |    3  |    301 | 1/200
Stealth         |     X     |   1   |     8    |    2  |    207 | 81/126
Shields         |           |   1   |     0    |    0  |      0 | 0/50
Unarmed Combat  |     X     |   1   |     0    |    0  |      0 | 0/50
Spellcasting    |     X     |   1   |    20    |    3  |    399 | 43/238
Conjurations    |           |   1   |     0    |    1  |     51 | 1/100
Hexes           |           |   1   |     0    |    0  |      0 | 0/50
Charms          |           |   1   |     0    |    0  |      0 | 0/50
Summonings      |           |   1   |     0    |    0  |      0 | 0/50
Necromancy      |           |   1   |     0    |    0  |      0 | 0/50
Translocations  |           |   1   |     0    |    0  |      0 | 0/50
Transmutations  |           |   1   |     0    |    0  |      0 | 0/50
Fire Magic      |           |   1   |     0    |    0  |      0 | 0/50
Ice Magic       |     X     |   1   |    57    |    5  |    881 | 131/300
Air Magic       |           |   1   |     0    |    0  |      0 | 0/50
Earth Magic     |           |   1   |     0    |    0  |      0 | 0/50
Poison Magic    |           |   1   |     0    |    0  |      0 | 0/50
Invocations     |           |   1   |     0    |    0  |      0 | 0/42
Evocations      |           |   1   |     0    |    0  |      0 | 0/50

Spell bugs:

Durations:

Attributes:
    #27: 386
    #49: 25
    #59: 1

Mutations:

Inventory bugs:

Equipment:
    eq slot #6, inv slot #0: +0 robe

}}}}}}}}}}}

Webtiles message buffer: 
Webtiles JSON stack:

Screenshot:
          ..
    ..     .
    #.     .#
    #.###   .##
    #....   ...
    #...#   ♣.♣
    #...#   ♣⌠♣
    #...♣♣♣♣♣.♣♣♣♣♣(.#
    #.....Z⌠@<Z⌠.....#
........♣♣♣♣♣.♣♣♣♣♣...
.###....#   ♣⌠♣
   #....#   ♣.♣
   #.....   ...
   #..##.   ...
   #..  .  .....
   #..  ?. .....

clua stack:


dlua stack:


Lua persistent data:
<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>

Lua marker contents:
<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>