[all-commits] [llvm/llvm-project] 56decd: [ELF] Allow invalid sh_size%sh_entsize!=0 for non-...

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 56decd982dc03a74d1796d9d4dbd7d9e0cea98dc
      https://github.com/llvm/llvm-project/commit/56decd982dc03a74d1796d9d4dbd7d9e0cea98dc
  Author: Fangrui Song <maskray at google.com>
  Date:   2020-04-03 (Fri, 03 Apr 2020)

  Changed paths:
    M lld/ELF/InputFiles.cpp
    A lld/test/ELF/invalid/entsize.yaml

  Log Message:
  -----------
  [ELF] Allow invalid sh_size%sh_entsize!=0 for non-SHF_MERGE sections

Fixes https://bugs.llvm.org/show_bug.cgi?id=45370
Fixes https://github.com/Clozure/ccl/issues/273

.stab holds a table of 12-byte entries. GNU as before 2.35 incorrectly
sets sh_entsize(.stab) to 20 on 64-bit architectures:
https://sourceware.org/bugzilla/show_bug.cgi?id=25768

We should not emit the confusing error:
"SHF_MERGE section size (...) must be a multiple of sh_entsize (20)

Reviewed By: grimar, psmith

Differential Revision: https://reviews.llvm.org/D77368