[all-commits] [llvm/llvm-project] a41404: [lld/mac] Abort link immediately on invalid -undef...

[Nico Weber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a414044012920059ac4bfd2756669f2fca3a4b99
      https://github.com/llvm/llvm-project/commit/a414044012920059ac4bfd2756669f2fca3a4b99
  Author: Nico Weber <thakis at chromium.org>
  Date:   2022-12-08 (Thu, 08 Dec 2022)

  Changed paths:
    M lld/MachO/Driver.cpp
    M lld/test/MachO/treat-undef-sym.s

  Log Message:
  -----------
  [lld/mac] Abort link immediately on invalid -undefined argument

I tried `-undefined suppress` without `-flat_namespace`.
lld printed `'-undefined suppress' only valid with '-flat_namespace'`
followed by many many screenfuls of error messages about undefined
symbols, making the original diag hard to see.

This is probably the common case when using `-undefined`, so let's
just abort the link immediately when there's an invalid `-undefined`
arg.

Differential Revision: https://reviews.llvm.org/D139559