ERROR in 'prompt.cc' at line 387: slot not a letter: null (0)

Version: Dungeon Crawl Stone Soup 0.34-a0-377-g2aa8828f32
Platform: unix
Bits: 64
Game mode: normal
Tiles: online

Seed: 5426586331042495768, deterministic pregen: 1
Command line: /usr/games/crawl-git-2aa8828f32 -name jesper -rc /dgldir/rcfiles/crawl-git/jesper.rc -macro /dgldir/rcfiles/crawl-git/jesper.macro -morgue /dgldir/morgue/jesper/ -webtiles-socket /crawl-master/webserver/sockets/jesper:2025-07-17.19:43:44.sock -await-connection

RC options:
restart_after_game = false


Crash caused by signal #6: Aborted

Obtained 23 stack frames.
/usr/games/crawl-git-2aa8828f32(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5d397a41bb0e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-2aa8828f32(_Z13do_crash_dumpv+0x43a) [0x5d397a429bca]: do_crash_dump()
/usr/games/crawl-git-2aa8828f32(_Z20crash_signal_handleri+0x1fa) [0x5d397a41bfea]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x797ec26a6330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x797ec26ffb2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x797ec26a627e]: 
/usr/games/crawl-git-2aa8828f32(+0x4e4f9d) [0x5d397a428f9d]: 
/usr/games/crawl-git-2aa8828f32(_Z3diePKciS0_z+0x166) [0x5d397a429616]: die(char const*, int, char const*, ...)
/usr/games/crawl-git-2aa8828f32(_Z15letter_to_indexi+0x85) [0x5d397a937685]: letter_to_index(int)
/usr/games/crawl-git-2aa8828f32(+0x6e414d) [0x5d397a62814d]: 
/usr/games/crawl-git-2aa8828f32(_ZSt16__insertion_sortIN9__gnu_cxx17__normal_iteratorIPP8InvEntrySt6vectorIS3_SaIS3_EEEENS0_5__ops15_Iter_comp_iterI21menu_entry_comparatorEEEvT_SD_T0_+0xd8) [0x5d397a633978]: void std::__insertion_sort<__gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > >, __gnu_cxx::__ops::_Iter_comp_iter<menu_entry_comparator> >(__gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > >, __gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > >, __gnu_cxx::__ops::_Iter_comp_iter<menu_entry_comparator>)
/usr/games/crawl-git-2aa8828f32(_ZN7InvMenu10load_itemsERKSt6vectorIPK8item_defSaIS3_EESt8functionIFP9MenuEntrySA_EE11menu_letterbb+0x82d) [0x5d397a62fabd]: InvMenu::load_items(std::vector<item_def const*, std::allocator<item_def const*> > const&, std::function<MenuEntry* (MenuEntry*)>, menu_letter, bool, bool)
/usr/games/crawl-git-2aa8828f32(_ZN11UseItemMenu13populate_menuEv+0x411) [0x5d397a63be71]: UseItemMenu::populate_menu()
/usr/games/crawl-git-2aa8828f32(_ZN11UseItemMenu5resetE15operation_typesPKc+0x128) [0x5d397a63c7b8]: UseItemMenu::reset(operation_types, char const*)
/usr/games/crawl-git-2aa8828f32(_ZN11UseItemMenuC1E15operation_typesiPKc+0x133) [0x5d397a63ca63]: UseItemMenu::UseItemMenu(operation_types, int, char const*)
/usr/games/crawl-git-2aa8828f32(_Z16use_an_item_menuRP8item_def15operation_typesiPKcSt8functionIFbvEE+0x40) [0x5d397a63cae0]: use_an_item_menu(item_def*&, operation_types, int, char const*, std::function<bool ()>)
/usr/games/crawl-git-2aa8828f32(_Z11use_an_item15operation_typesP8item_def+0x2ca) [0x5d397a64231a]: use_an_item(operation_types, item_def*)
/usr/games/crawl-git-2aa8828f32(+0xc8114a) [0x5d397abc514a]: 
/usr/games/crawl-git-2aa8828f32(+0xc81cd5) [0x5d397abc5cd5]: 
/usr/games/crawl-git-2aa8828f32(main+0x1f7) [0x5d397a350b97]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x797ec268b1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x797ec268b28b]: 
/usr/games/crawl-git-2aa8828f32(_start+0x25) [0x5d397a351685]: 

Trying to run gdb.
GNU gdb (Ubuntu 15.0.50.20240403-0ubuntu1) 15.0.50.20240403-git
Copyright (C) 2024 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".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x0000797ec27717a7 in __GI___wait4 (pid=6960, stat_loc=0x0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
#0  0x0000797ec27717a7 in __GI___wait4 (pid=6960, stat_loc=0x0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
        sc_ret = -512
        sc_ret = <optimized out>
#1  0x00005d397a41c1bc in call_gdb (file=0x797ec28654e0 <_IO_2_1_stderr_>) at crash.cc:438
        gdb = <optimized out>
        attach_cmd = "attach 6936\000\000\000\000\000\000\000\000"
#2  0x00005d397a429be8 in do_crash_dump () at dbg-asrt.cc:673
        t = 1752781449
        dir = "/dgldir/morgue/jesper/"
        name = "/dgldir/morgue/jesper/crash-jesper-20250717-194409.txt", '\000' <repeats 125 times>
        signal_info = "Crash caused by signal #6: Aborted"
        cause_msg = "ERROR in 'prompt.cc' at line 387: slot not a letter: null (0)"
        file = 0x797ec28654e0 <_IO_2_1_stderr_>
#3  0x00005d397a41bfea in crash_signal_handler (sig_num=6) at crash.cc:198
No locals.
#4  <signal handler called>
No locals.
#5  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
        tid = <optimized out>
        ret = 0
        pd = <optimized out>
        old_mask = {__val = {0}}
        ret = <optimized out>
        pd = <optimized out>
        old_mask = <optimized out>
        ret = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        __private = <optimized out>
        __oldval = <optimized out>
#6  __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
No locals.
#7  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
No locals.
#8  0x0000797ec26a627e in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#9  0x00005d397a428f9d in _BreakStrToDebugger (mesg=mesg@entry=0x7ffefd4bef30 "ERROR in 'prompt.cc' at line 387: slot not a letter: null (0)", assert=false) at dbg-asrt.cc:799
No locals.
#10 0x00005d397a429616 in die (file=file@entry=0x5d397ac02235 "prompt.cc", line=line@entry=387, format=format@entry=0x5d397ac02260 "slot not a letter: %s (%d)") at dbg-asrt.cc:859
        tmp = "slot not a letter: null (0)", '\000' <repeats 2020 times>
        mesg = "ERROR in 'prompt.cc' at line 387: slot not a letter: null (0)", '\000' <repeats 2009 times>
        args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7ffefd4bf830, reg_save_area = 0x7ffefd4bf750}}
#11 0x00005d397a937685 in letter_to_index (the_letter=0) at prompt.cc:387
No locals.
#12 0x00005d397a62814d in sort_item_slot (a=<optimized out>) at invent.cc:786
No locals.
#13 compare_item_fn<int, sort_item_slot> (a=<optimized out>, b=0x5d399ca3a640) at invent.cc:750
No locals.
#14 0x00005d397a633978 in item_comparator::compare (this=0x5d399c8f8d70, b=<optimized out>, a=<optimized out>) at /home/crawl-dev/dgamelaunch-config/crawl-build/crawl-git-repository/crawl-ref/source/externs.h:297
No locals.
#15 _compare_invmenu_items (cmps=<optimized out>, b=0x5d399ca3a640, a=0x5d399ca3ce30) at invent.cc:822
        cmp = <optimized out>
        comparator = @0x5d399c8f8d70: {cmpfn = 0x5d397a628130 <compare_item_fn<int, sort_item_slot>(InvEntry const*, InvEntry const*)>, negated = false}
        __for_range = <optimized out>
        __for_begin = <optimized out>
        __for_end = <optimized out>
#16 menu_entry_comparator::operator() (this=<synthetic pointer>, b=<optimized out>, a=0x5d399ca3ce30) at invent.cc:842
        ia = 0x5d399ca3ce30
        ib = 0x5d399ca3a640
        ia = <optimized out>
        ib = <optimized out>
#17 __gnu_cxx::__ops::_Iter_comp_iter<menu_entry_comparator>::operator()<__gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > >, __gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > > > (__it2=0x5d399ca3a640, __it1=0x5d399ca3ce30, this=<synthetic pointer>) at /usr/include/c++/13/bits/predefined_ops.h:158
No locals.
#18 std::__insertion_sort<__gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > >, __gnu_cxx::__ops::_Iter_comp_iter<menu_entry_comparator> > (__first=..., __last=..., __last@entry=0x20, __comp=__comp@entry=...) at /usr/include/c++/13/bits/stl_algo.h:1819
        __i = 0x5d399ca3ce30
#19 0x00005d397a62f288 in std::__final_insertion_sort<__gnu_cxx::__normal_iterator<InvEntry**, std::vector<InvEntry*, std::allocator<InvEntry*> > >, __gnu_cxx::__ops::_Iter_comp_iter<menu_entry_comparator> > (__comp=..., __last=..., __first=...) at /usr/include/c++/13/bits/stl_algo.h:1864
No locals.
#20 0x00005d397a62fabd in InvMenu::load_items(std::vector<item_def const*, std::allocator<item_def const*> > const&, std::function<MenuEntry* (MenuEntry*)>, menu_letter, bool, bool) (this=this@entry=0x7ffefd4bfcc0, mitems=std::vector of length 2, capacity 2 = {...}, procfn=..., ckey=..., ckey@entry=..., sort=sort@entry=true, subkeys=<optimized out>, subkeys@entry=false) at invent.cc:1018
        i = <optimized out>
        subtitle = "Hand Weapons"
        forced_first = 0x0
        obj = <optimized out>
        inv_class = {mData = {2, 0 <repeats 19 times>}}
        items_in_class = std::vector of length 2, capacity 2 = {0x5d399ca3a640, 0x5d399ca3ce30}
        cond = <optimized out>
        select_all = ""
#21 0x00005d397a63be71 in UseItemMenu::populate_menu (this=0x7ffefd4bfcc0) at item-use.cc:508
        use_category_selection = true
#22 0x00005d397a63c7b8 in UseItemMenu::reset (this=this@entry=0x7ffefd4bfcc0, _oper=<optimized out>, prompt_override=prompt_override@entry=0x0) at item-use.cc:349
No locals.
#23 0x00005d397a63ca63 in UseItemMenu::UseItemMenu (this=0x7ffefd4bfcc0, _oper=<optimized out>, item_type=<optimized out>, prompt=0x0) at item-use.cc:371

Compilation info:
<<<<<<<<<<<
Compiled with GCC 13.3.0
Build platform: x86_64-linux-gnu
Platform: x86_64-linux-gnu
CFLAGS: -O2 -pipe -DUSE_TILE -DUSE_TILE_WEB -Wall -Wformat-security -Wundef -Wextra -Wno-missing-field-initializers -Wno-implicit-fallthrough -Wno-type-limits -Wno-uninitialized -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 -g -DWIZARD -DASSERTS -DREGEX_PCRE -DCLUA_BINDINGS -DDGAMELAUNCH -DSAVE_DIR_PATH="/crawl-master/crawl-git-2aa8828f32/saves" -DSHARED_DIR_PATH="/crawl-master/crawl-git/saves" -DDATA_DIR_PATH="/crawl-master/crawl-git-2aa8828f32/data/" -DWEB_DIR_PATH="/crawl-master/crawl-git-2aa8828f32/data/web/" -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600
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  = corridors, absdepth0 = 0
Level vaults:
    wander_arrival_estate
    layout_loops_ring
    chequers_serial_rivers_marsh
    minmay_tromino_v4_c

Markers:
<<<<<<<<<<<<<<<<<<<<<<
Marker #0, type 0 at (23, 28): feature (stone_stairs_up_i)
>>>>>>>>>>>>>>>>>>>>>>

Messages:
<<<<<<<<<<<<<<<<<<<<<<
a -> t - a scroll of teleportation
Bad channel name 'Jiyva says' for runrest: 'Jiyva says: Divide and consume'
Welcome, jesper the Human Wanderer.
The glorious Orb of Zot lies far below, as if waiting for you to find it.
Press ? for a list of commands and other information.
Found a staircase leading out of the dungeon.
You begin with the following items: a +0 dagger, a +0 pair of gloves, a +0
robe, a +2 buckler, a scroll of teleportation; and the following spell
memorised: Apportation; and the following spells available to memorise:
Teleport Other.
Okay, then.
Casting: Apportation (safe; 28% risk of failure)
Confirm with . or Enter, or press ? or * to list all spells.
Okay, then.
You open the gate.
There is an open gate here.
You now have 3 gold pieces.
A kobold comes into view. It is wielding a +0 short sword.
The kobold shouts!
A bat comes into view.
You block the bat's attack.
You miss the bat. The bat completely misses you.
You swing at nothing. You block the bat's attack.
You hit the bat.
The bat is moderately wounded.
The bat barely misses you. x2
You hit the bat.
You kill the bat!
You barely miss the kobold.
The kobold hits you with a +0 short sword.
You hit the kobold.
The kobold is moderately wounded.
A kobold comes into view. It is wielding a +0 club.
The kobold closely misses you.
The kobold shouts!
You hit the kobold but do no damage.
The kobold is moderately wounded.
The kobold hits you with a +0 short sword.
You closely miss the kobold.
The kobold is moderately wounded.
The kobold hits you with a +0 short sword.
You barely miss the kobold.
The kobold is moderately wounded.
The kobold barely misses you.
You hit the kobold but do no damage.
The kobold is moderately wounded.
The kobold completely misses you.
You hit the kobold but do no damage.
The kobold is moderately wounded.
The kobold closely misses you.
You hit the kobold.
You kill the kobold!
You hit the kobold but do no damage. The kobold misses you.
The kobold hits you with a +0 club.
You closely miss the kobold. The kobold closely misses you.
You hit the kobold but do no damage. The kobold closely misses you.
You hit the kobold but do no damage. You block the kobold's attack.
You hit the kobold.
The kobold is heavily wounded.
The kobold misses you.
You closely miss the kobold.
The kobold is heavily wounded.
The kobold hits you with a +0 club.
You hit the kobold but do no damage.
The kobold is heavily wounded.
The kobold closely misses you.
You closely miss the kobold.
The kobold is heavily wounded.
The kobold hits you but does no damage.
You barely miss the kobold.
The kobold is heavily wounded.
The kobold hits you with a +0 club.
You hit the kobold.
The kobold is severely wounded.
The kobold closely misses you.
You barely miss the kobold.
The kobold is severely wounded.
The kobold hits you but does no damage.
You hit the kobold.
You kill the kobold!
You start resting.
HP restored.
Items here: )) †††.

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

Version history:
Game started: 0.34-a0-377-g2aa8828f32

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: 1, map_stat_gen: 0, type: 1, arena_suspended: 0

prev_cmd = CMD_WIELD_WEAPON
repeat_cmd = CMD_NO_CMD

Player:
{{{{{{{{{{{
Name:    [jesper]
Species: Human
Job:     Wanderer

HP: 13/13; mods: 0/0
MP: 2/2; mod: 0
Stats: 10 12 14
Position: (52, 12), god: No God (0), turn_is_over: 0, banished: 0
Standing on/in/over feature: floor

Skills (mode: manual)
Name            | can_currently_train | train | training | level | points | progress
Fighting        |          X          |   0   |     0    |    0  |      0 | 0/50
Short Blades    |          X          |   0   |     0    |    0  |      0 | 0/50
Long Blades     |          X          |   0   |     0    |    0  |      0 | 0/50
Axes            |          X          |   0   |     0    |    0  |      0 | 0/50
Maces & Flails  |          X          |   0   |     0    |    0  |      0 | 0/50
Polearms        |          X          |   0   |     0    |    0  |      0 | 0/50
Staves          |          X          |   0   |     0    |    0  |      0 | 0/50
Ranged Weapons  |          X          |   0   |     0    |    0  |      0 | 0/50
Throwing        |          X          |   0   |     0    |    0  |      0 | 0/50
Armour          |          X          |   1   |    15    |    1  |     54 | 4/100
Dodging         |          X          |   1   |    15    |    2  |    160 | 10/150
Stealth         |          X          |   1   |    14    |    1  |     46 | 4/84
Shields         |          X          |   1   |    14    |    3  |    304 | 4/200
Unarmed Combat  |          X          |   0   |     0    |    0  |      0 | 0/50
Spellcasting    |          X          |   1   |    14    |    1  |     63 | 4/119
Conjurations    |          X          |   0   |     0    |    0  |      0 | 0/50
Hexes           |          X          |   0   |     0    |    0  |      0 | 0/50
Summonings      |          X          |   0   |     0    |    0  |      0 | 0/50
Necromancy      |          X          |   0   |     0    |    0  |      0 | 0/50
Translocations  |          X          |   1   |    14    |    1  |     54 | 4/100
Forgecraft      |          X          |   0   |     0    |    0  |      0 | 0/50
Fire Magic      |          X          |   0   |     0    |    0  |      0 | 0/50
Ice Magic       |          X          |   0   |     0    |    0  |      0 | 0/50
Air Magic       |          X          |   0   |     0    |    0  |      0 | 0/50
Earth Magic     |          X          |   0   |     0    |    0  |      0 | 0/50
Alchemy         |          X          |   0   |     0    |    0  |      0 | 0/50
Invocations     |          X          |   1   |    14    |    1  |     49 | 7/84
Evocations      |          X          |   0   |     0    |    0  |      0 | 0/50
Shapeshifting   |          X          |   0   |     0    |    0  |      0 | 0/59

Spell bugs:

Durations:

Attributes:
    #12: 3
    #49: 67

Mutations:
    explore regen: 1 (innate)

Inventory bugs:

Equipment:
    eq slot #2, inv slot #3: +2 buckler
    eq slot #5, inv slot #1: +0 pair of gloves
    eq slot #3, inv slot #2: +0 robe
    eq slot #1, inv slot #0: +0 dagger

}}}}}}}}}}}

Webtiles message buffer: 
Webtiles JSON stack:

Screenshot:
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.#######      ##.##
........       #.#
........       #♣#
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...

clua stack:


dlua stack:


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

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