From 430c7ff73297e8a6cb7391debe6b96a6cfa3806e Mon Sep 17 00:00:00 2001
From: Dmitry Mikulin <dmitry.mikulin@sony.com>
Date: Mon, 5 Mar 2018 19:34:33 +0000
Subject: [PATCH] On Windows we need to be able to process response files with
 Windows-style path names.

Differential Revision: https://reviews.llvm.org/D43988

llvm-svn: 326737
---
 llvm/lib/Support/CommandLine.cpp           |  6 ++++-
 llvm/unittests/Support/CommandLineTest.cpp | 35 ++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Support/CommandLine.cpp b/llvm/lib/Support/CommandLine.cpp
index d95b791..1354e3e 100644
--- a/llvm/lib/Support/CommandLine.cpp
+++ b/llvm/lib/Support/CommandLine.cpp
@@ -25,6 +25,7 @@
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Config/config.h"
 #include "llvm/Support/ConvertUTF.h"
@@ -1080,7 +1081,10 @@ bool CommandLineParser::ParseCommandLineOptions(int argc,
   SmallVector<const char *, 20> newArgv(argv, argv + argc);
   BumpPtrAllocator A;
   StringSaver Saver(A);
-  ExpandResponseFiles(Saver, TokenizeGNUCommandLine, newArgv);
+  ExpandResponseFiles(Saver,
+         Triple(sys::getProcessTriple()).isOSWindows() ?
+         cl::TokenizeWindowsCommandLine : cl::TokenizeGNUCommandLine,
+         newArgv);
   argv = &newArgv[0];
   argc = static_cast<int>(newArgv.size());
 
diff --git a/llvm/unittests/Support/CommandLineTest.cpp b/llvm/unittests/Support/CommandLineTest.cpp
index 36ff4e2..328dfa3 100644
--- a/llvm/unittests/Support/CommandLineTest.cpp
+++ b/llvm/unittests/Support/CommandLineTest.cpp
@@ -10,6 +10,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/Config/config.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"
@@ -631,6 +632,40 @@ TEST(CommandLineTest, ArgumentLimit) {
   EXPECT_FALSE(llvm::sys::commandLineFitsWithinSystemLimits("cl", args.data()));
 }
 
+TEST(CommandLineTest, ResponseFileWindows) {
+  if (!Triple(sys::getProcessTriple()).isOSWindows())
+    return;
+
+  static cl::list<std::string>
+	  InputFilenames(cl::Positional, cl::desc("<input files>"), cl::ZeroOrMore);
+  StackOption<bool> TopLevelOpt("top-level", cl::init(false));
+
+  // Create response file.
+  int FileDescriptor;
+  SmallString<64> TempPath;
+  std::error_code EC =
+      llvm::sys::fs::createTemporaryFile("resp-", ".txt", FileDescriptor, TempPath);
+  EXPECT_TRUE(!EC);
+
+  std::ofstream RspFile(TempPath.c_str());
+  EXPECT_TRUE(RspFile.is_open());
+  RspFile << "-top-level\npath\\dir\\file1\npath/dir/file2";
+  RspFile.close();
+
+  llvm::SmallString<128> RspOpt;
+  RspOpt.append(1, '@');
+  RspOpt.append(TempPath.c_str());
+  const char *args[] = {"prog", RspOpt.c_str()};
+  EXPECT_FALSE(TopLevelOpt);
+  EXPECT_TRUE(
+      cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
+  EXPECT_TRUE(TopLevelOpt);
+  EXPECT_TRUE(InputFilenames[0] == "path\\dir\\file1");
+  EXPECT_TRUE(InputFilenames[1] == "path/dir/file2");
+
+  llvm::sys::fs::remove(TempPath.c_str());
+}
+
 TEST(CommandLineTest, ResponseFiles) {
   llvm::SmallString<128> TestDir;
   std::error_code EC =
-- 
2.7.4