[all-commits] [llvm/llvm-project] 82ca39: Reland "[lld/mac] Port typo correction for undefin...

[Nico Weber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 82ca390062d11512528e3d357d8d3d7b69477caf
      https://github.com/llvm/llvm-project/commit/82ca390062d11512528e3d357d8d3d7b69477caf
  Author: Nico Weber <thakis at chromium.org>
  Date:   2022-10-13 (Thu, 13 Oct 2022)

  Changed paths:
    M lld/MachO/SymbolTable.cpp
    A lld/test/MachO/undef-spell-corrector.s
    A lld/test/MachO/undef-suggest-extern-c.s
    A lld/test/MachO/undef-suggest-extern-c2.s

  Log Message:
  -----------
  Reland "[lld/mac] Port typo correction for undefined symbols from ELF port"

The only difference in the reland is that the loop at the top of
getAlternativeSpelling() now calls dyn_cast_or_null() instead
of dyn_cast() -- a file's symbols list can contain null entries.

The test for this might be slightly involved, so I'll land it in
a follow-up, to make the reland similar to the original commit.

Originally reviewed at:
Differential Revision: https://reviews.llvm.org/D135038

This reverts commit 317b5582b813c51d1fb6723fd44b227b7f274bc7.