[all-commits] [llvm/llvm-project] ec315a: [lld-macho] Fix LOH parsing segfault

[Jez Ng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ec315a5fa1c5880df0f6a25cede9282bb551c8a1
      https://github.com/llvm/llvm-project/commit/ec315a5fa1c5880df0f6a25cede9282bb551c8a1
  Author: Jez Ng <jezng at fb.com>
  Date:   2022-07-21 (Thu, 21 Jul 2022)

  Changed paths:
    M lld/MachO/InputFiles.cpp
    A lld/test/MachO/loh-parsing.s

  Log Message:
  -----------
  [lld-macho] Fix LOH parsing segfault

`advanceSubsection()` didn't account for the possibility that a section
could have no subsections.

Reviewed By: #lld-macho, thakis, BertalanD

Differential Revision: https://reviews.llvm.org/D130288