[PATCH] D124656: [ELF] Support custom sections before DATA_SEGMENT_RELRO_END

[Fangrui Song via Phabricator via llvm-commits]

MaskRay created this revision.
MaskRay added a reviewer: peter.smith.
Herald added subscribers: StephenFan, arichardson, emaste.
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We currently hard code RELRO sections. When a custom section is between
DATA_SEGMENT_ALIGN and DATA_SEGMENT_RELRO_END, we may report a spurious
`error: section: ... is not contiguous with other relro sections`. GNU ld
makes such sections RELRO.

glibc recently switched to default --with-default-link=no. This configuration
places `__libc_atexit` and others between DATA_SEGMENT_ALIGN and
DATA_SEGMENT_RELRO_END. This patch will fix its lld build.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D124656

Files:
  lld/ELF/OutputSections.h
  lld/ELF/ScriptParser.cpp
  lld/ELF/Writer.cpp
  lld/test/ELF/linkerscript/data-segment-relro.test

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