[Dovecot] imap SORT core dumps on beta1

[jsiegle at psu.edu]

Steps to reproduce:
0 login userid password
1 select myfavoritemailbox
2 sort (FROM) UTF-8 ALL

I tested alpha5 and it works fine. Here is the trace of beta1. I see many adds in revision 
8726(hg annotate mail-storage.c), but that line number(674) is very old. 
So it might be a local problem.

Here is what dbx "where" says about what happened.

mailbox_header_lookup_init(box = (nil), headers = 0x0ffffffffffff260), 
line 674 in "mail-storage.c"
wanted_fields_get(box = (nil), sort_program = 0x0ffffffffffff3a0, 
wanted_fields_r = 0x0ffffffffffff308, headers_ctx_r = 0x0ffffffffffff310), 
line 518 in "imap-search.c"
imap_search_start(ctx = 0x0000000110021c70, sargs = 0x00000001100848b8, 
sort_program = 0x0ffffffffffff3a0), line 536 in "imap-search.c"
cmd_sort(cmd = 0x0000000110021b58), line 136 in "cmd-sort.c"
client_command_input(cmd = 0x0000000110021b58), line 603 in "client.c"
client_command_input(cmd = 0x0000000110021b58), line 652 in "client.c"
client_handle_next_command(client = 0x00000001100216d0, remove_io_r = 
0x0ffffffffffff621), line 693 in "client.c"
unnamed block in client_handle_input(client = 0x00000001100216d0), line 
703 in "client.c"
client_handle_input(client = 0x00000001100216d0), line 703 in "client.c"
client_input(client = 0x00000001100216d0), line 748 in "client.c"
io_loop_handler_run(ioloop = 0x000000011001f850), line 203 in 
"ioloop-poll.c"
io_loop_run(ioloop = 0x000000011001f850), line 338 in "ioloop.c"
main(argc = 1, argv = 0x0ffffffffffff918, envp = 0x0ffffffffffff928), line 
315 in "main.c"
(dbx) quit

Thanks,
Jonathan