[Bug 229471] x11/lightdm core dumps

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229471

            Bug ID: 229471
           Summary: x11/lightdm core dumps
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: woodsb02 at freebsd.org
          Reporter: freebsd at justmail.de
          Assignee: woodsb02 at freebsd.org
             Flags: maintainer-feedback?(woodsb02 at freebsd.org)

Starting x11/lightdm on a recent FreeBSD CURRENT (r335821) leads to a core dump
with signal 10. Analyzing the dump shows 
root at freebsd-t450:~ # gdb81 /usr/local/sbin/lightdm lightdm.core
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Reading symbols from /usr/local/sbin/lightdm...(no debugging symbols
found)...done.
[New LWP 100728]
Core was generated by `lightdm'.
Program terminated with signal SIGBUS, Bus error.
#0  strncmp (
    s1=0x7a9cd970a65f427b <error: Cannot access memory at address
0x7a9cd970a65f427b>, s2=0x800721a9c "PATH", n=4) at
/usr/src/lib/libc/string/strncmp.c:47
47                      if (*s1 != *s2++)
(gdb) bt
#0  strncmp (s1=0x7a9cd970a65f427b <error: Cannot access memory at address
0x7a9cd970a65f427b>, s2=0x800721a9c "PATH", n=4) at
/usr/src/lib/libc/string/strncmp.c:47
#1  0x00000008008c794e in strncmpeq (nameValue=0x7a9cd970a65f427b <error:
Cannot access memory at address 0x7a9cd970a65f427b>, name=<optimized out>,
nameLen=<optimized out>)
    at /usr/src/lib/libc/stdlib/getenv.c:146
#2  __findenv_environ (name=<optimized out>, nameLen=<optimized out>) at
/usr/src/lib/libc/stdlib/getenv.c:197
#3  getenv (name=0x800721a9c "PATH") at /usr/src/lib/libc/stdlib/getenv.c:443
#4  0x000000080083e356 in _execvpe (name=0x80184b180 "/usr/local/bin/X",
argv=0x800d3b6a0, envp=0x7fffffffe780) at /usr/src/lib/libc/gen/exec.c:279
#5  execvp (name=0x80184b180 "/usr/local/bin/X", argv=0x800d3b6a0) at
/usr/src/lib/libc/gen/exec.c:144
#6  0x00000000002220b3 in ?? ()
#7  0x00000000002363ff in ?? ()
#8  0x0000000000225055 in ?? ()
#9  0x0000000000222d3d in ?? ()
#10 0x00000000002173e6 in ?? ()
#11 0x000000000021e9c8 in ?? ()
#12 0x0000000000216095 in ?? ()
#13 0x000000080026d000 in ?? ()
#14 0x0000000000000000 in ?? ()
(gdb) 

I installed lightdm on a machine running 11.2, this runs fine.

All software is installed from url: "pkg+http://pkg.FreeBSD.org/${ABI}/latest".

Please let me know, if further information is needed.

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