[Dovecot] Dovecot 2.0beta3: Latest HG crashed upon LMTP Delivery

[Thomas Leuxner]

Simple LMTP handshake crashes it:

[20:19] root spectre:/usr/lib/dovecot# ./lmtp
220 spectre.leuxner.net Dovecot LMTP ready
Info: Connect from local
lhlo leuxner.net
250-spectre.leuxner.net
250-8BITMIME
250-ENHANCEDSTATUSCODES
250 PIPELINING
mail from:<tlx at leuxner.net>
250 2.1.0 OK
rcpt to:<tlx at leuxner.net>
250 2.1.5 OK
data
354 OK
test
.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f08f26006e0 (LWP 11784)]
0x00007f08f1ee1630 in message_parse_header_next () from /usr/lib/dovecot/libdovecot.so.0
(gdb) bt full
#0  0x00007f08f1ee1630 in message_parse_header_next () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#1  0x00007f08f1ee2fb3 in ?? () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#2  0x00007f08f1ee2659 in message_parser_parse_next_block () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#3  0x00007f08f1ee286b in message_parser_parse_header () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#4  0x00007f08f2193c40 in index_mail_parse_headers () from /usr/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#5  0x00007f08f2193f77 in ?? () from /usr/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#6  0x00007f08f21942df in index_mail_get_first_header () from /usr/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#7  0x00007f08f0f21846 in ?? () from /usr/lib/dovecot/modules/lib90_sieve_plugin.so
No symbol table info available.
#8  0x000000000040a663 in mail_deliver ()
No symbol table info available.
#9  0x0000000000406a53 in ?? ()
No symbol table info available.
#10 0x0000000000406fc8 in ?? ()
No symbol table info available.
#11 0x00007f08f1efc00b in io_loop_handler_run () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#12 0x00007f08f1efb188 in io_loop_run () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#13 0x00007f08f1eeb193 in master_service_run () from /usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#14 0x0000000000405be3 in main ()
No symbol table info available.