Merge 5d401fc95d into aca8280288

Type::Elaborated is removed by llvmorg-22-init-3166-g91cdd35008e9

llvm::sys::fs and clang functions are changed due to
https://discourse.llvm.org/t/rfc-file-system-sandboxing-in-clang-llvm/88791

src/indexer.cc

@@ -1282,7 +1282,6 @@ IndexResult index(WorkingFiles *wfiles, VFS *vfs, const std::string &opt_wdir, c
     return {};
   clang->getPreprocessorOpts().RetainRemappedFileBuffers = true;
 #if LLVM_VERSION_MAJOR >= 22
-  clang->setVirtualFileSystem(fs);
   clang->createFileManager();
 #else
   clang->createFileManager(fs);

src/sema_manager.cc

@@ -284,7 +284,6 @@ std::unique_ptr<CompilerInstance> buildCompilerInstance(Session &session, std::u
   // RequiresNullTerminator: true may cause out-of-bounds read when a file is
   // mmap'ed but is saved concurrently.
 #if LLVM_VERSION_MAJOR >= 22
-  clang->setVirtualFileSystem(fs);
   clang->createFileManager();
 #else
   clang->createFileManager(fs);