================
@@ -102,7 +94,18 @@ bool DependencyScanningWorker::scanDependencies(
StringRef WorkingDirectory, const std::vector<std::string> &CommandLine,
DependencyConsumer &Consumer, DependencyActionController &Controller,
DiagnosticConsumer &DC,
- llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS) {
+ IntrusiveRefCntPtr<llvm::vfs::FileSystem> OverlayFS) {
+ IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = DepFS;
+ if (OverlayFS) {
+#ifndef NDEBUG
+ bool SawDepFS = false;
+ OverlayFS->visit(
+ [&](llvm::vfs::FileSystem &VFS) { SawDepFS |= &VFS == DepFS.get(); });
+ assert(SawDepFS && "OverlayFS not based on DepFS");
+#endif
+ FS = std::move(OverlayFS);
+ }
+
DignosticsEngineWithDiagOpts DiagEngineWithCmdAndOpts(CommandLine, FS, DC);
DependencyScanningAction Action(Service, WorkingDirectory, Consumer,
Controller, DepFS);
----------------
jansvoboda11 wrote:
(Or maybe we could make `FS` a scanner-specific VFS
`CustomizedDependencyScanningWorkerFileSystem` that provides
`DependencyScanningWorkerFilesystem &getDepFS()` instead, to avoid the
visitation.)
https://github.com/llvm/llvm-project/pull/168970
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