[Bug 219244] sysutils/grub2-bhyve: Broke silently, instantly segfaults

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219244

            Bug ID: 219244
           Summary: sysutils/grub2-bhyve: Broke silently, instantly
                    segfaults
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: kmoore at FreeBSD.org
          Reporter: noah.bergbauer at tum.de
          Assignee: kmoore at FreeBSD.org
             Flags: maintainer-feedback?(kmoore at FreeBSD.org)

I'm running FreeBSD 10.3 and some change during the last 300 days apparently
broke grub2-bhyve. A clean build (I tested gcc48, gcc49, gcc5, gcc6 both from
the port poudriere and manually from git) instantly segfaults - I can't even
display --help.

I restored the binary from an old backup and that works just fine.

gdb complains about dwarf versions and doesn't show any symbols so I'm not sure
how to debug this.

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