1 files changed, 20 insertions, 5 deletions
diff --git a/unittests/Lex/HeaderSearchTest.cpp b/unittests/Lex/HeaderSearchTest.cpp
index 060135bc73..5bcdd9efd1 100644
--- a/unittests/Lex/HeaderSearchTest.cpp
+++ b/unittests/Lex/HeaderSearchTest.cpp
@@ -1,9 +1,8 @@
 //===- unittests/Lex/HeaderSearchTest.cpp ------ HeaderSearch tests -------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
@@ -12,12 +11,12 @@
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/TargetOptions.h"
 #include "clang/Lex/HeaderSearch.h"
 #include "clang/Lex/HeaderSearchOptions.h"
+#include "clang/Serialization/InMemoryModuleCache.h"
 #include "gtest/gtest.h"
 
 namespace clang {
@@ -92,5 +91,21 @@ TEST_F(HeaderSearchTest, Dots) {
             "z");
 }
 
+#ifdef _WIN32
+TEST_F(HeaderSearchTest, BackSlash) {
+  addSearchDir("C:\\x\\y\\");
+  EXPECT_EQ(Search.suggestPathToFileForDiagnostics("C:\\x\\y\\z\\t",
+                                                   /*WorkingDir=*/""),
+            "z/t");
+}
+#endif
+
+TEST_F(HeaderSearchTest, DotDotsWithAbsPath) {
+  addSearchDir("/x/../y/");
+  EXPECT_EQ(Search.suggestPathToFileForDiagnostics("/y/z",
+                                                   /*WorkingDir=*/""),
+            "z");
+}
+
 } // namespace
 } // namespace clang