[PATCH] D97757: [lld-macho] Rework length check when opening input files

[Greg McGary via Phabricator via llvm-commits]

gkm created this revision.
gkm added a reviewer: lld-macho.
Herald added a reviewer: int3.
Herald added a project: lld-macho.
gkm requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This reverts diff D97610 <https://reviews.llvm.org/D97610> (commit 0223ab035c199e537a0040857ba147ced87fd533 <https://reviews.llvm.org/rG0223ab035c199e537a0040857ba147ced87fd533>) and adds a one-line fix to verify that a `MemoryBufferRef` has sufficient length before reading a 4-byte magic number.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97757

Files:
  lld/MachO/Driver.cpp
  lld/MachO/DriverUtils.cpp
  lld/MachO/InputFiles.cpp
  lld/MachO/InputFiles.h
  lld/test/MachO/invalid/tiny-input.s
  lld/test/MachO/rename.s

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D97757.327384.patch
Type: text/x-patch
Size: 7699 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210302/f7a7bf96/attachment-0001.bin>