diff --git a/clang/lib/Tooling/DependencyScanning/DependencyScanningWorker.cpp b/clang/lib/Tooling/DependencyScanning/DependencyScanningWorker.cpp index ca15a088c308d..5527275575b26 100644 --- a/clang/lib/Tooling/DependencyScanning/DependencyScanningWorker.cpp +++ b/clang/lib/Tooling/DependencyScanning/DependencyScanningWorker.cpp @@ -750,9 +750,25 @@ bool DependencyScanningWorker::computeDependencies( auto InMemoryFS = llvm::makeIntrusiveRefCnt(); InMemoryFS->setCurrentWorkingDirectory(WorkingDirectory); SmallString<128> FakeInputPath; - // TODO: We should retry the creation if the path already exists. - llvm::sys::fs::createUniquePath(ModuleName + "-%%%%%%%%.input", FakeInputPath, - /*MakeAbsolute=*/false); + + unsigned RetryCount = 5; // retries to create + bool UniquePathCreated = false; + + for (unsigned i = 0; i < RetryCount; ++i) { + if (llvm::sys::fs::createUniquePath(ModuleName + "-%%%%%%%%.input", FakeInputPath, + /*MakeAbsolute=*/false)) { + if (!llvm::sys::fs::exists(FakeInputPath)) { + UniquePathCreated = true; + break; // Successfully created a unique path + } + } + } + if (!UniquePathCreated) { + llvm::errs() << "Error: Failed to create a unique input path after " + << RetryCount << " retries.\n"; + return false; // Handle failure appropriately + } + InMemoryFS->addFile(FakeInputPath, 0, llvm::MemoryBuffer::getMemBuffer("")); llvm::IntrusiveRefCntPtr InMemoryOverlay = InMemoryFS;