[lld] [llvm] WIP: [LLD][COFF] Make unresolved symbol search behavior compliant with MSVC link.exe (PR #85290)

[via llvm-commits]

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@@ -91,13 +92,20 @@ class LinkerDriver {
 
   // Used by ArchiveFile to enqueue members.
   void enqueueArchiveMember(const Archive::Child &c, const Archive::Symbol &sym,
-                            StringRef parentName);
+                            StringRef parentName,
+                            ArchiveFile *parent = nullptr);
 
-  void enqueuePDB(StringRef Path) { enqueuePath(Path, false, false); }
+  void enqueuePDB(StringRef Path) {
+    enqueuePath(Path, false, false, /*parent=*/std::nullopt);
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sylvain-audi wrote:

`parent` argument already has `std::nullopt` as default param. I would either revert this line, or remove the default value

https://github.com/llvm/llvm-project/pull/85290