[Bug 206812] each man invocation leads to the mandoc crash

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206812

            Bug ID: 206812
           Summary: each man invocation leads to the mandoc crash
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: emz at norma.perm.ru

Version: FreeBSD bsdrookie.norma.com. 11.0-CURRENT FreeBSD 11.0-CURRENT #0
r294254: Mon Jan 18 13:46:05 YEKT 2016    
emz at bsdrookie.norma.com.:/usr/obj/usr/src/sys/BSDROOKIE  amd64

Each man invocation leads to the mandoc crashing and dumping a core. 100%
reproducible.

backtrace:

[root at bsdrookie:/etc]# gdb `which mandoc` mandoc.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `mandoc'.
Program terminated with signal 6, Aborted.
Reading symbols from /usr/lib/libprivatesqlite3.so.0...Reading symbols from
/usr/lib/debug//usr/lib/libprivatesqlite3.so.0.debug...done.
done.
Loaded symbols for /usr/lib/libprivatesqlite3.so.0
Reading symbols from /lib/libz.so.6...Reading symbols from
/usr/lib/debug//lib/libz.so.6.debug...done.
done.
Loaded symbols for /lib/libz.so.6
Reading symbols from /lib/libc.so.7...Reading symbols from
/usr/lib/debug//lib/libc.so.7.debug...done.
done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /lib/libthr.so.3...Reading symbols from
/usr/lib/debug//lib/libthr.so.3.debug...done.
done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /libexec/ld-elf.so.1...Reading symbols from
/usr/lib/debug//libexec/ld-elf.so.1.debug...done.
done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x0000000800e5148a in thr_kill () from /lib/libc.so.7
[New Thread 801615000 (LWP 102166/<unknown>)]
(gdb) bt
#0  0x0000000800e5148a in thr_kill () from /lib/libc.so.7
#1  0x0000000800e5145b in __raise (s=<value optimized out>) at
/usr/src/lib/libc/gen/raise.c:52
#2  0x0000000800e513c9 in abort () at /usr/src/lib/libc/stdlib/abort.c:65
#3  0x0000000800eccce1 in __assert (func=<value optimized out>, file=<value
optimized out>, 
    line=<value optimized out>, failedexpr=<value optimized out>) at
/usr/src/lib/libc/gen/assert.c:51
#4  0x000000000042c6b0 in main (argc=<value optimized out>, argv=<value
optimized out>)
    at /usr/src/usr.bin/mandoc/../../contrib/mdocml/main.c:723
#5  0x000000000040395f in _start ()
#6  0x000000080066e000 in ?? ()
#7  0x0000000000000000 in ?? ()

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