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

[Jacek Caban via llvm-commits]

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@@ -475,6 +508,11 @@ void LinkerDriver::parseDirectives(InputFile *file) {
             toString(file) + ")");
     }
   }
+
+  // If we are running off the low-priority task list, execute and drain the
+  // high priority task list before going any further. This is to ensure symbols
+  // provided by /DEFAULTLIB archives are linked properly in the symbol table.
+  executeFirstQueue(firstTaskQueue);
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cjacek wrote:

I’m wondering if we could simplify this by having `run()` handle it directly without the need for additional assistance. For example, the attached [patch](https://github.com/user-attachments/files/17511930/run.txt) also passes the tests.

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