emacs-19.3.3-Lucid built with gcc 2.2.2 on SunOS 4.1.1 IPC.

I am getting hangs rather frequently with vm. Attaching to the process
with gdb, it looks like emacs is stuck in an infinite loop in the
while() at line 393 of extents.c, with the following sequence:

393       while (current)
395           if (current->end < from)
408           current = current->next;
409         }

I was in vm summary mode, and I typed 'q'.

Here is the backtrace:

(gdb) bt
#0  0xb2044 in adjust_extents (from=148432, to=173494, amount=16817, buf=0x2ccd00) at extents.c:395
#1  0x60234 in gap_left (pos=148431, newgap=0) at insdel.c:132
#2  0x61428 in del_range (from=146728, to=148432) at insdel.c:586
#3  0x8708c in Fdelete_region (b=146728, e=148432) at editfns.c:917
#4  0xaa6dc in Fbyte_code (bytestr=204297916, vector=271416704, maxdepth=8) at bytecode.c:972
#5  0x8f7b8 in funcall_lambda (fun=405395584, nargs=0, arg_vector=0xf7ffe78c) at eval.c:1969
#6  0x8f038 in Ffuncall (nargs=1, args=0xf7ffe788) at eval.c:1836
#7  0xa900c in Fbyte_code (bytestr=204297724, vector=271370752, maxdepth=3) at bytecode.c:428
#8  0x8f7b8 in funcall_lambda (fun=405395648, nargs=2, arg_vector=0xf7ffe938) at eval.c:1969
#9  0x8f3d4 in apply_lambda (fun=405395648, args=338552900, eval_flag=1) at eval.c:1900
#10 0x8df74 in Feval (form=338540492) at eval.c:1441
#11 0x8c93c in Fcondition_case (args=338964156) at eval.c:968
#12 0xa98d0 in Fbyte_code (bytestr=204340888, vector=271453184, maxdepth=4) at bytecode.c:582
#13 0x8f7b8 in funcall_lambda (fun=405393472, nargs=1, arg_vector=0xf7ffee84) at eval.c:1969
#14 0x8f038 in Ffuncall (nargs=2, args=0xf7ffee80) at eval.c:1836
#15 0xa900c in Fbyte_code (bytestr=204340288, vector=271453440, maxdepth=7) at bytecode.c:428
#16 0x8f7b8 in funcall_lambda (fun=405393856, nargs=0, arg_vector=0xf7fff160) at eval.c:1969
#17 0x8f038 in Ffuncall (nargs=1, args=0xf7fff15c) at eval.c:1836
#18 0x8e680 in apply1 (fn=70119948, arg=69244932) at eval.c:1566
#19 0x891b0 in Fcall_interactively (function=70119948, record=69244932) at callint.c:265
#20 0x4cde0 in Fcommand_execute (cmd=70119948, record=69244932) at keyboard.c:701
#21 0x24ddc in dispatch_command_event_internal (event=0x2c6e30, leaf=70119948) at event-stream.c:1590
#22 0x24a48 in compose_command (event=0x2c6e30, execute_p=1) at event-stream.c:1501
#23 0x23588 in dispatch_event_internal (event=1747742256, execute_p=1) at event-stream.c:974
#24 0x251d4 in Fdispatch_event (event=1747742256) at event-stream.c:1714
#25 0x4cb00 in command_loop_1 (dummy=2103296) at keyboard.c:508
#26 0x8ca6c in internal_condition_case (bfun=0x4c8bc <command_loop_1>, handlers=69245212, hfun=0x4c164 <cmd_error>) at eval.c:1002
#27 0x4c5f8 in command_loop_2 (dummy=69244932) at keyboard.c:388
#28 0x8c428 in internal_catch (tag=69245192, func=0x4c5d0 <command_loop_2>, arg=69244932) at eval.c:814
#29 0x4c5a0 in command_loop () at keyboard.c:367
#30 0x4bf94 in recursive_edit_1 () at keyboard.c:221
#31 0x4c0b8 in Frecursive_edit () at keyboard.c:250
#32 0x4b61c in main (argc=1, argv=0xf7fffa4c, envp=0xf7fffa54) at emacs.c:817


-John
x-gateway: rodan.UU.NET from bug-lucid-emacs to alt.lucid-emacs.bug; Wed, 11 Nov 1992 19:24:02 EST
From: jeffreyh@kpc.com (Jeffrey Heller)
Date: Wed, 11 Nov 1992 16:14:16 PST
Subject: lucid emacs problem
Newsgroups: alt.lucid-emacs.bug