diff --git a/clang/unittests/Driver/ToolChainTest.cpp b/clang/unittests/Driver/ToolChainTest.cpp
new file mode 100644
index 0000000..8fddc9b
--- /dev/null
+++ b/clang/unittests/Driver/ToolChainTest.cpp
@@ -0,0 +1,74 @@
+//===- unittests/Driver/ToolChainTest.cpp --- ToolChain tests -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Unit tests for ToolChains.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Driver/ToolChain.h"
+#include "clang/Basic/DiagnosticIDs.h"
+#include "clang/Basic/DiagnosticOptions.h"
+#include "clang/Basic/LLVM.h"
+#include "clang/Basic/VirtualFileSystem.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "llvm/Support/raw_ostream.h"
+#include "gtest/gtest.h"
+using namespace clang;
+using namespace clang::driver;
+
+namespace {
+
+TEST(ToolChainTest, VFSGCCInstallation) {
+  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
+
+  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  struct TestDiagnosticConsumer : public DiagnosticConsumer {};
+  DiagnosticsEngine Diags(DiagID, &*DiagOpts, new TestDiagnosticConsumer);
+  IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
+      new vfs::InMemoryFileSystem);
+  Driver TheDriver("/usr/bin/clang", "arm-linux-gnueabihf", Diags,
+                   InMemoryFileSystem);
+
+  const char *EmptyFiles[] = {
+      "foo.cpp",
+      "/usr/bin/clang",
+      "/usr/lib/gcc/arm-linux-gnueabi/4.6.1/crtbegin.o",
+      "/usr/lib/gcc/arm-linux-gnueabi/4.6.1/crtend.o",
+      "/usr/lib/gcc/arm-linux-gnueabihf/4.6.3/crtbegin.o",
+      "/usr/lib/gcc/arm-linux-gnueabihf/4.6.3/crtend.o",
+      "/usr/lib/arm-linux-gnueabi/crt1.o",
+      "/usr/lib/arm-linux-gnueabi/crti.o",
+      "/usr/lib/arm-linux-gnueabi/crtn.o",
+      "/usr/lib/arm-linux-gnueabihf/crt1.o",
+      "/usr/lib/arm-linux-gnueabihf/crti.o",
+      "/usr/lib/arm-linux-gnueabihf/crtn.o",
+      "/usr/include/arm-linux-gnueabi/.keep",
+      "/usr/include/arm-linux-gnueabihf/.keep",
+      "/lib/arm-linux-gnueabi/.keep",
+      "/lib/arm-linux-gnueabihf/.keep"};
+
+  for (const char *Path : EmptyFiles)
+    InMemoryFileSystem->addFile(Path, 0,
+                                llvm::MemoryBuffer::getMemBuffer("\n"));
+
+  std::unique_ptr<Compilation> C(
+      TheDriver.BuildCompilation({"-fsyntax-only", "foo.cpp"}));
+
+  std::string S;
+  {
+    llvm::raw_string_ostream OS(S);
+    C->getDefaultToolChain().printVerboseInfo(OS);
+  }
+  EXPECT_EQ("Found candidate GCC installation: "
+            "/usr/lib/gcc/arm-linux-gnueabihf/4.6.3\n",
+            S);
+}
+
+} // end anonymous namespace