From 167d79f0fafc75b2df850f7c0fa89203f8561062 Mon Sep 17 00:00:00 2001
From: sunshineinabox <aqemail@gmail.com>
Date: Tue, 4 Aug 2026 23:37:11 -0700
Subject: [PATCH] hunkgen: satisfy the clang 22 ComplierInstance VFS invariant.

---
 ThunkLibs/Generator/gen.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ThunkLibs/Generator/gen.cpp b/ThunkLibs/Generator/gen.cpp
index d9db77997..ccc7cbc19 100644
--- a/ThunkLibs/Generator/gen.cpp
+++ b/ThunkLibs/Generator/gen.cpp
@@ -812,6 +812,9 @@ bool GenerateThunkLibsActionFactory::runInvocation(std::shared_ptr<clang::Compil
 #else
   clang::CompilerInstance Compiler(std::move(PCHContainerOps));
   Compiler.setInvocation(std::move(Invocation));
+#endif
+#if LLVM_VERSION_MAJOR >= 22
+  Compiler.setVirtualFileSystem(Files->getVirtualFileSystemPtr());
 #endif
   Compiler.setFileManager(Files);