[Bug 231926] ldd can't operate on a segfaulting binary

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231926

            Bug ID: 231926
           Summary: ldd can't operate on a segfaulting binary
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: arrowd at FreeBSD.org

When compiling lang/ghc port on FreeBSD 12, an executable named ghc-iserv-prof
gets corrupted by some unrelated bug and segfaults when being launched. During
`make stage-qa` the following command is called by qa.sh:

env LD_LIBMAP_DISABLE=1 ldd -a
/wrkdirs/usr/ports/lang/ghc/work/stage/usr/local/lib/ghc-8.4.3/bin/ghc-iserv-prof

This command also results in a segfault with the same message:

/wrkdirs/usr/ports/lang/ghc/work/stage/usr/local/lib/ghc-8.4.3/bin/ghc-iserv-prof:
signal 11

I'm not sure if this is a bug in ldd, but I've got an impression that it
shouldn't segfault even when given a broken executable.

To reproduce on FreeBSD 12:

# pkg install ghc
# env LD_LIBMAP_DISABLE=1 ldd -a /usr/local/lib/ghc-8.4.3/bin/ghc-iserv-prof

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