[Bug 247416] x11-wm/picom: Seg falts on startup

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247416

            Bug ID: 247416
           Summary: x11-wm/picom: Seg falts on startup
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: jbeich at FreeBSD.org
          Reporter: vendion at gmail.com
          Assignee: jbeich at FreeBSD.org
             Flags: maintainer-feedback?(jbeich at FreeBSD.org)

Using FreeBSD 12.1-RELEASE-p6 picom v8 is crashing with a segmentation fault
for me. I have tested with the version that in available from pkg as well as
rebuilt it locally from the ports tree and got the same result.

Looking at the backtrace from the core dump I don't know how useful it will be
as it appears that picom is being built without debugging symbols and I'm not
sure how to compile picom from the ports tree with them not striped out.

[/u/p/x/picom]─> lldb -c /home/vendion/picom.core -- /usr/local/bin/picom 
(lldb) target create "/usr/local/bin/picom" --core "/home/vendion/picom.core"
Core file '/home/vendion/picom.core' (x86_64) was loaded.
(lldb) thread backtrace all
* thread #1, name = 'picom', stop reason = signal SIGSEGV
  * frame #0: 0x00000008003925e2
libX11.so.6`___lldb_unnamed_symbol17$$libX11.so.6 + 258
    frame #1: 0x00000008003942cc libX11.so.6`_XSetImage + 204
    frame #2: 0x000000080038ebc4 libX11.so.6`XGetSubImage + 52
    frame #3: 0x00000008006ac7a2
libGL.so.1`___lldb_unnamed_symbol835$$libGL.so.1 + 242
    frame #4: 0x00000008006ac673
libGL.so.1`___lldb_unnamed_symbol833$$libGL.so.1 + 19
    frame #5: 0x00000008016339a5
swrast_dri.so`___lldb_unnamed_symbol12$$swrast_dri.so + 245
    frame #6: 0x000000000023dfbf picom`___lldb_unnamed_symbol255$$picom + 671
    frame #7: 0x0000000000231dd5 picom`___lldb_unnamed_symbol184$$picom + 485
    frame #8: 0x0000000000232436 picom`___lldb_unnamed_symbol185$$picom + 1526
    frame #9: 0x0000000000222c68 picom`___lldb_unnamed_symbol32$$picom + 4680
    frame #10: 0x0000000000222be7 picom`___lldb_unnamed_symbol32$$picom + 4551
    frame #11: 0x00000000002217d9 picom`___lldb_unnamed_symbol26$$picom + 25
    frame #12: 0x00000008002cf9b1 libev.so.4`ev_invoke_pending + 113
    frame #13: 0x00000008002d02f0 libev.so.4`ev_run + 2336
    frame #14: 0x0000000000220768 picom`___lldb_unnamed_symbol20$$picom + 6856
    frame #15: 0x000000000021e10f picom`___lldb_unnamed_symbol1$$picom + 271

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