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-rw-r--r--clang/unittests/Tooling/Syntax/TreeTestBase.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/unittests/Tooling/Syntax/TreeTestBase.cpp b/clang/unittests/Tooling/Syntax/TreeTestBase.cpp
index 400a0d5..b2be64f 100644
--- a/clang/unittests/Tooling/Syntax/TreeTestBase.cpp
+++ b/clang/unittests/Tooling/Syntax/TreeTestBase.cpp
@@ -153,6 +153,7 @@ SyntaxTreeTest::buildTree(StringRef Code, const TestClangConfig &ClangConfig) {
FileName, llvm::MemoryBuffer::getMemBufferCopy(Code).release());
CompilerInstance Compiler(Invocation);
Compiler.setDiagnostics(Diags);
+ Compiler.setVirtualFileSystem(FS);
Compiler.setFileManager(FileMgr);
Compiler.setSourceManager(SourceMgr);