[all-commits] [llvm/llvm-project] c5f619: [lld-macho]Fix bug in finding "chained" re-exporte...

[Vy Nguyen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c5f61908a75142491143c68fb09caacba8502ae2
      https://github.com/llvm/llvm-project/commit/c5f61908a75142491143c68fb09caacba8502ae2
  Author: Vy Nguyen <vyng at google.com>
  Date:   2025-04-28 (Mon, 28 Apr 2025)

  Changed paths:
    M lld/MachO/InputFiles.cpp
    A lld/test/MachO/reexport-with-rpath.s

  Log Message:
  -----------
  [lld-macho]Fix bug in finding "chained" re-exported libs. (#135241)

Details:
When we have the following scenario:

- lib_a re-exports lib_b
- lib_b re-exports @rpath/lib_c
  + lib_b contains LC_RPATH

Previously, lld-macho cannot find lib_c because it was attempting to
resolve the '@rpath' from lib_b (which had no LC_RPATH defined). The
change here is to also consider all the LC_RPATH rom lib_b when trying
to find lib_c.

Inspired by real-life example when linking with
libXCTestSwiftSupport.dylib (which re-exports XCTest, which re-exports
XCTestCore)



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