[PATCH] D128184: [lld-macho] Show source information for undefined references

[Daniel Bertalan via Phabricator via llvm-commits]

BertalanD created this revision.
Herald added projects: lld-macho, All.
Herald added a reviewer: lld-macho.
BertalanD requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: llvm-commits, sstefan1.
Herald added a project: LLVM.

The error used to look like this:

  ld64.lld: error: undefined symbol: _foo
  >>> referenced by /path/to/bar.o:(symbol _baz+0x4)

If DWARF line information is available, we now show where in the source
the references are coming from:

  ld64.lld: error: unreferenced symbol: _foo
  >>> referenced by: bar.cpp:42 (/path/to/bar.cpp:42)
  >>>                /path/to/bar.o:(symbol _baz+0x4)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128184

Files:
  lld/MachO/Dwarf.cpp
  lld/MachO/Dwarf.h
  lld/MachO/InputFiles.cpp
  lld/MachO/InputFiles.h
  lld/MachO/InputSection.cpp
  lld/MachO/InputSection.h
  lld/MachO/SymbolTable.cpp
  lld/MachO/SyntheticSections.cpp
  lld/MachO/SyntheticSections.h
  lld/test/MachO/invalid/undef-debug.s

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