Bug reports - auth is broken in Dovecot 2.3.3

[Berindeie Avram-Teodor]

Hello,
I have compiled Dovecot  2.3.3 from sources but I have problems with
authentication.
I tried to rebuild Dovecot 2.3.2.1 but the error persists.
I attach a .txt file with the information requested to report a bug.
My main mail server is fallen, (the same for the test server) I will send
the report from a Gmail address.
If you need additional information I will be at your disposal.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://dovecot.org/pipermail/dovecot/attachments/20181003/f93d5f48/attachment.html>
-------------- next part --------------
dovecot -n
# 2.3.3 (dcead646b): /etc/dovecot/dovecot.conf
# OS: Linux 4.14.73 x86_64 Slackware 14.2+
glibc-2.28-x86_64
gcc-8.2.0-x86_64
Filesystem: ext4

telnet localhost imap
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
* BYE Disconnected: Auth process broken
Connection closed by foreign host.

cat /var/log/maillog
Oct  3 08:15:44 mail dovecot: auth: Fatal: master: service(auth): child 9586 killed with signal 11 (core dumped)
Oct  3 08:15:44 mail dovecot: master: Error: service(auth): command startup failed, throttling for 60 secs
Oct  3 08:15:44 mail dovecot: imap-login: Disconnected: Auth process broken (disconnected before auth was ready, waited 0 secs): user=<>, rip=127.0.0.1, lip=127.0.0.1, secured, session=<yk1YIUx3ZuN/AAAB>
Oct  3 08:15:44 mail dovecot: imap-login: Warning: Timeout leak: 0x7fba6c273870 (auth-server-connection.c:397)

gdb /usr/local/libexec/dovecot/auth /tmp/cores/core.auth.9586.mail.1538543744
GNU gdb (GDB) 8.2
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-slackware-linux".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/local/libexec/dovecot/auth...done.
[New LWP 9586]
Core was generated by `dovecot/auth'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f93c1ff4646 in __strcmp_ssse3 () from /lib64/libc.so.6
(gdb) bt full
#0  0x00007f93c1ff4646 in __strcmp_ssse3 () from /lib64/libc.so.6
No symbol table info available.
#1  0x000055574dbb58e8 in password_scheme_register_crypt () at password-scheme-crypt.c:190
        i = 0
        crypted = <optimized out>
        __func__ = <optimized out>
#2  0x000055574dbb543c in password_schemes_init () at password-scheme.c:874
        i = <optimized out>
#3  0x000055574db91936 in main_preinit () at main.c:185
        mod_set = {abi_version = 0x0, binary_name = 0x0, setting_name = 0x7ffe57a5d998 "\253ݥW\376\177", filter_callback = 0x7ffe57a5d9a8,
          filter_context = 0x7ffe57a5d8d0, require_init_funcs = false, debug = false, ignore_dlopen_errors = true, ignore_missing = true}
        services = <optimized out>
        mod_set = <optimized out>
        services = <optimized out>
#4  main (argc=<optimized out>, argv=<optimized out>) at main.c:392
        c = <optimized out>