2.2.32 'doveadm replicator replicate -f' segfault

Very minor bug; not specifying the user mask with 'doveadm replicator replicate -f' causes a segfault:

server:~# doveadm replicator replicate -f Segmentation fault

server:~# doveadm replicator replicate -f '*' 123 users updated

server:~# gdb /usr/bin/doveadm core.2418 GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-100.el7 This GDB was configured as "x86_64-redhat-linux-gnu". Reading symbols from /usr/bin/doveadm...Reading symbols from /usr/lib/debug/usr/bin/doveadm.debug...done. done. [New LWP 2418] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `doveadm replicator replicate -f'. Program terminated with signal 11, Segmentation fault. #0 0x00007fd2c059f921 in __strlen_sse2_pminub () from /lib64/libc.so.6 Missing separate debuginfos, use: debuginfo-install bzip2-libs-1.0.6-13.el7.x86_64 glibc-2.17-196.el7.x86_64 nss-softokn-freebl-3.28.3-8.el7_4.x86_64 xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-17.el7.x86_64 (gdb) bt full #0 0x00007fd2c059f921 in __strlen_sse2_pminub () from /lib64/libc.so.6 No symbol table info available. #1 0x00007fd2c08c68f4 in str_append_tabescaped (dest=dest@entry=0x5578cd69f668, src=0x0) at strescape.c:136 No locals. #2 0x00005578cb5a2731 in cmd_replicator_replicate (argc=1, argv=0x5578cd6a75f8) at doveadm-replicator.c:245 ctx = 0x5578cd69f608 str = 0x5578cd69f668 line = <optimized out> #3 0x00005578cb5999d8 in doveadm_try_run (argv=0x5578cd6a75f0, argc=2, cmd_name=0x5578cd6a7610 "replicator") at doveadm.c:223 cmd = <optimized out> #4 main (argc=3, argv=0x5578cd6a75e8) at doveadm.c:383 cctx = {cmd = 0x0, argc = 0, argv = 0x0, username = 0x5578cd6a77cf "root", cli = true, tcp_server = false, local_ip = { family = 0, u = {ip6 = {__in6_u = {__u6_addr8 = '\000' , __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, remote_ip = {family = 0, u = {ip6 = {__in6_u = { __u6_addr8 = '\000' , __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, local_port = 0, remote_port = 0, conn = 0x0} cmd_name = 0x5578cd6a7610 "replicator" quick_init = false c = <optimized out> (gdb) frame 4 #4 main (argc=3, argv=0x5578cd6a75e8) at doveadm.c:383 383 !doveadm_try_run(cmd_name, argc, (const char **)argv) &&

dovecot -n:

# 2.2.32 (dfbe293d4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.20 (7cd71ba) # OS: Linux 3.10.0-693.2.2.el7.x86_64 x86_64 Red Hat Enterprise Linux Server release 7.4 (Maipo) auth_master_user_separator = * auth_username_format = %Ln auth_verbose = yes disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it first_valid_uid = 30000 imapc_features = rfc822.size fetch-headers imapc_host = some-imap-server imapc_user = %u last_valid_uid = 30000 mail_location = mdbox:~/mdbox mail_plugins = " zlib acl notify replication" mail_prefetch_count = 20 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext spamtest spamtestplus vnd.dovecot.duplicate mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /master-file driver = passwd-file master = yes } passdb { args = /etc/dovecot/conf.d/dovecot-ldap.conf.ext driver = ldap } plugin { mail_replica = tcp:server2:1109 sieve = ~/.dovecot.sieve sieve_before = /some-path/global.sieve sieve_dir = ~/sieve sieve_extensions = +spamtest +spamtestplus +vnd.dovecot.duplicate sieve_spamtest_max_value = 100 sieve_spamtest_status_header = X-PerlMx-Spam: Gauge=[[:alnum:]]+, Probability=(-?[[:digit:]]+)%.* sieve_spamtest_status_type = score zlib_save = gz zlib_save_level = 6 } protocols = imap lmtp sieve replication_max_conns = 30 service aggregator { fifo_listener replication-notify-fifo { user = vmail } unix_listener replication-notify { user = vmail } } service doveadm { inet_listener { port = 1109 } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { inet_listener lmtp { port = 24 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { group = vmail mode = 0660 user = vmail } } userdb { args = /etc/dovecot/conf.d/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = " zlib acl notify replication sieve" } protocol lda { mail_plugins = " zlib acl notify replication sieve" }