find-file on vm.elc.gz cases SIGSEGV in decode_coding_emacs_mule()

[stktrc@yahoo.com]

This bug report will be sent to the Free Software Foundation,
not to your local site managers!
Please write in English, because the Emacs maintainers do not have
translators to read other languages for them.

Your bug report will be posted to the bug-gnu-emacs@gnu.org mailing list,
and to the gnu.emacs.bug news group.

In GNU Emacs 21.2.1 (sparc-sun-solaris2.8, X toolkit, Xaw3d scroll bars)
 of 2002-05-30 on muu.cs.umu.se
configured using `configure  --prefix=/pkg/emacs/21.2'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: en_US
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Download ftp://ftp.uni-mainz.de/pub/software/gnu/vm/vm.elc.gz
Start Emacs
Ensure auto-compression-mode is activated
Find-file vm.elc.gz
Observe SIGSEGV


(gdb) run
Starting program: /usr/local/bin/emacs 

Program received signal SIGSEGV, Segmentation fault.
0x81ec8 in decode_coding_emacs_mule ()
(gdb) bt
#0  0x81ec8 in decode_coding_emacs_mule ()
#1  0x8b2a8 in decode_coding ()
#2  0x18c748 in Fcall_process ()
#3  0x1514d8 in Ffuncall ()
#4  0x182f58 in Fbyte_code ()
#5  0x151d00 in funcall_lambda ()
#6  0x151770 in Ffuncall ()
#7  0x182f58 in Fbyte_code ()
#8  0x1509d0 in Feval ()
#9  0x14f698 in Fcondition_case ()
#10 0x1835a0 in Fbyte_code ()
#11 0x151d00 in funcall_lambda ()
#12 0x151770 in Ffuncall ()
#13 0x150f40 in Fapply ()
#14 0x1514d8 in Ffuncall ()
#15 0x182f58 in Fbyte_code ()
#16 0x151d00 in funcall_lambda ()
#17 0x151770 in Ffuncall ()
#18 0x153234 in call6 ()
#19 0x1197b0 in Finsert_file_contents ()
#20 0x150a24 in Feval ()
#21 0x14f698 in Fcondition_case ()
#22 0x1835a0 in Fbyte_code ()
#23 0x151d00 in funcall_lambda ()
#24 0x151770 in Ffuncall ()
#25 0x182f58 in Fbyte_code ()
#26 0x151d00 in funcall_lambda ()
#27 0x151770 in Ffuncall ()
#28 0x182f58 in Fbyte_code ()
#29 0x151d00 in funcall_lambda ()
#30 0x151770 in Ffuncall ()
#31 0x182f58 in Fbyte_code ()
#32 0x151d00 in funcall_lambda ()
#33 0x151770 in Ffuncall ()
#34 0x153030 in apply1 ()
#35 0x14d0ac in Fcall_interactively ()
#36 0xf4df4 in Fcommand_execute ()
#37 0xe93bc in command_loop_1 ()
#38 0x14f794 in internal_condition_case ()
#39 0xf81a4 in command_loop_2 ()
#40 0x1532f8 in internal_catch ()
#41 0xe8450 in command_loop ()
#42 0xe7ffc in recursive_edit_1 ()
#43 0xe8130 in Frecursive_edit ()
#44 0xe6dc8 in main ()