[PATCH] D88561: [llvm-readobj] - Fix possible crashes related to dumping gnu hash symbols.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: jhenderson, MaskRay.
Herald added subscribers: rupprecht, emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.
grimar requested review of this revision.

It fixes possible scenarios when we crash/assert with `--hash-symbols` when
dumping an invalid GNU hash table which has a broken value in the buckets array.

This fixes a crash reported in comments for
https://bugs.llvm.org/show_bug.cgi?id=47681


https://reviews.llvm.org/D88561

Files:
  llvm/test/tools/llvm-readobj/ELF/hash-symbols.test
  llvm/tools/llvm-readobj/ELFDumper.cpp

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