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I am running the mud on valgrind to detect any
errors, the mud crashed with this input (below), if
any additional information is needed just ask and i'll
post the information, I just don't want to spam the
post with stuff that might not be needed :)


==2233== Conditional jump or move depends on
uninitialised value(s)
==2233== at 0x80EFB8D: write_to_buffer
(comm.c:1870)
==2233== by 0x80F373A: act (comm.c:3130)
==2233== by 0x80F1808: nanny (comm.c:2430)
==2233== by 0x80ED3DA: game_loop_unix
(comm.c:857)
==2233==
==2233== ---- Attach to GDB ? ---
[Return/N/n/Y/y/C/c] ----

(gdb) bt
#0 vg_do_syscall3 (syscallno=4294966784,
arg1=2362, arg2=0, arg3=0) at vg_mylibc.c:92

#1 0x0000093a in ?? ()
#2 0x080efb8d in write_to_buffer (d=0x4154ea90,
txt=0xbfff934d 'notice nothing special in the
room.\n\r\e[0;0;37m', length=29) at comm.c:1870
#3 0x080f373b in act (format=0x8181f33 '$n has
entered the game.', ch=0x4155407c, arg1=0x0,
arg2=0x0, type=0) at comm.c:3130
#4 0x080f1809 in nanny (d=0x4155235c,
argument=0x415529c4 '1') at comm.c:2430
#5 0x080ed3db in game_loop_unix (control=4) at
comm.c:857
#6 0x080ecca5 in main (argc=2, argv=0xbffff624)
at comm.c:473
#7 0x402ab7f7 in __libc_start_main () from
/lib/i686/libc.so.6

#2 0x080efb8d in write_to_buffer (d=0x4154ea90, txt=0xbfff934d 'notice nothing special in the room.\n\r\e[0;0;37m', length=29) at comm.c:1870

The length of the character array is wrong. In your second post it's a character array containing NUL and it's length is set to 39.