[SystemZ][z/OS] Propagate IsText parameter to open text files as text (#107906)

This patch adds an IsText parameter to the following functions
openFileForRead, getBufferForFile, getBufferForFileImpl and determines
whether a file is text by querying the file tag on z/OS. The default is
set to OF_Text instead of OF_None, this change in value does not affect
any other platforms other than z/OS.

1 files changed, 6 insertions, 6 deletions

diff --git a/clang/lib/Basic/FileManager.cpp b/clang/lib/Basic/FileManager.cpp
index 6097b85..27075ce 100644
--- a/clang/lib/Basic/FileManager.cpp
+++ b/clang/lib/Basic/FileManager.cpp
@@ -530,7 +530,7 @@ void FileManager::fillRealPathName(FileEntry *UFE, llvm::StringRef FileName) {
 
 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
 FileManager::getBufferForFile(FileEntryRef FE, bool isVolatile,
-                              bool RequiresNullTerminator,
+                              bool RequiresNullTerminator, bool IsText,
                               std::optional<int64_t> MaybeLimit) {
   const FileEntry *Entry = &FE.getFileEntry();
   // If the content is living on the file entry, return a reference to it.
@@ -558,21 +558,21 @@ FileManager::getBufferForFile(FileEntryRef FE, bool isVolatile,
 
   // Otherwise, open the file.
   return getBufferForFileImpl(Filename, FileSize, isVolatile,
-                              RequiresNullTerminator);
+                              RequiresNullTerminator, IsText);
 }
 
 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
 FileManager::getBufferForFileImpl(StringRef Filename, int64_t FileSize,
-                                  bool isVolatile,
-                                  bool RequiresNullTerminator) const {
+                                  bool isVolatile, bool RequiresNullTerminator,
+                                  bool IsText) const {
   if (FileSystemOpts.WorkingDir.empty())
     return FS->getBufferForFile(Filename, FileSize, RequiresNullTerminator,
-                                isVolatile);
+                                isVolatile, IsText);
 
   SmallString<128> FilePath(Filename);
   FixupRelativePath(FilePath);
   return FS->getBufferForFile(FilePath, FileSize, RequiresNullTerminator,
-                              isVolatile);
+                              isVolatile, IsText);
 }
 
 /// getStatValue - Get the 'stat' information for the specified path,