[PATCH] D60825: [llvm-objcopy] - Check dynamic relocation sections for broken references.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: jhenderson, jakehehrlich, rupprecht, alexshap.
Herald added subscribers: MaskRay, arichardson, emaste.
Herald added a reviewer: espindola.

This is a fix for https://bugs.llvm.org/show_bug.cgi?id=41371.

Currently, it is possible to break the sh_link field of the dynamic relocation section
by removing the section it refers to. The patch fixes an issue and adds 2 test cases.

One of them shows that it does not seem possible to break the sh_info field.
That is explained in the comments. I added an assert to verify this.


https://reviews.llvm.org/D60825

Files:
  test/tools/llvm-objcopy/ELF/dynrelocsec-remove-shinfo-reference.test
  test/tools/llvm-objcopy/ELF/dynrelocsec-remove-shlink-reference.test
  tools/llvm-objcopy/ELF/Object.cpp
  tools/llvm-objcopy/ELF/Object.h

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