[PATCH] D44622: [ELF] - Fix for LLD crashes with --emit-relocs when trying to proccess .eh_frame

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: ruiu, espindola.
Herald added subscribers: arichardson, emaste.

This fixes PR36367 which is about segfault when --emit-relocs is
used together with .eh_frame sections.

That happens because we reorder .eh_frame sections and corresponding
.rela.eh_frame sections when combining .eh_frames.
Usually, objects do not do that and we error out on such objects (I added the test case),
so the situation with .eh_frame is unique.

The patch fixes it.


https://reviews.llvm.org/D44622

Files:
  ELF/Writer.cpp
  test/ELF/emit-relocs-eh-frame.s
  test/ELF/emit-relocs-shared.s
  test/ELF/emit-relocs.s
  test/ELF/invalid/emit-relocs-reordered.test

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