[Bug 221081] sysutils/screen: core dumped when lsz/lrz on zmodem pass mode

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221081

            Bug ID: 221081
           Summary: sysutils/screen: core dumped when lsz/lrz on zmodem
                    pass mode
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: cy at FreeBSD.org
          Reporter: amutu at amutu.com
             Flags: maintainer-feedback?(cy at FreeBSD.org)
          Assignee: cy at FreeBSD.org

file send/receive ok,but screen core dumped after file transfered.

detail:
pkg info | grep screen
screen-4.5.0_3                 Multi-screen window manager

uname -a
FreeBSD fb 11.1-RELEASE FreeBSD 11.1-RELEASE #0 r321309: Fri Jul 21 02:08:28
UTC 2017     root at releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64

ctr+a:zmodem pass

lrz
...
Zmodem active

*B0100000023be50
[screen caught signal 11. (core dumped)]


gdb /usr/local/bin/screen ./screen.core
...
bt
#0  0x00000008013f884a in thr_kill () from /lib/libc.so.7
(gdb) bt
#0  0x00000008013f884a in thr_kill () from /lib/libc.so.7
#1  0x00000008013f8814 in __raise (s=6) at /usr/src/lib/libc/gen/raise.c:52
#2  0x00000008013f8789 in abort () at /usr/src/lib/libc/stdlib/abort.c:65
#3  0x00000000004064d2 in ?? ()
#4  <signal handler called>
#5  0x0000000000420257 in ?? ()
#6  0x000000000044d447 in ?? ()
#7  0x0000000000405a5e in ?? ()
#8  0x00000000004038cf in ?? ()
#9  0x0000000800686000 in ?? ()
#10 0x0000000000000000 in ?? ()

/var/log/messages:
Jul 29 06:42:19 fb kernel: pid 64080 (screen), uid 0: exited on signal 6 (core
dumped)
Jul 29 06:43:23 fb kernel: pid 64155 (screen), uid 0: exited on signal 6 (core
dumped)
Jul 29 06:48:08 fb pkg: screen upgraded: 4.4.0_2 -> 4.5.0_3
Jul 29 06:49:48 fboffice kernel: pid 64383 (screen), uid 0: exited on signal 6
(core dumped)
Jul 29 06:51:02 fb lrz[64462]: [root] no.name/ZMODEM: got error
Jul 29 06:51:23 fb lrz[64498]: [root] no.name/ZMODEM: got error
Jul 29 06:51:52 fb lrz[64503]: [root] no.name/ZMODEM: got error
Jul 29 06:52:10 fb kernel: pid 64494 (screen), uid 0: exited on signal 6 (core
dumped)

also core dumped for previous screen version which is 4.4.0_2.

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