From dda6f52db192491cd828db5d4fb56be41d4897ac Mon Sep 17 00:00:00 2001
From: Ben Langmuir <blangmuir@apple.com>
Date: Thu, 27 Feb 2014 19:20:35 +0000
Subject: Revert "Remove constructors from FileEntry that prevent owning
 resources"

This reverts commit r202420, which broke the build.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@202421 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/Basic/FileManager.h | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

(limited to 'include/clang/Basic/FileManager.h')

diff --git a/include/clang/Basic/FileManager.h b/include/clang/Basic/FileManager.h
index 616f9846a2..bd85318e2f 100644
--- a/include/clang/Basic/FileManager.h
+++ b/include/clang/Basic/FileManager.h
@@ -27,7 +27,6 @@
 #include "llvm/Support/Allocator.h"
 // FIXME: Enhance libsystem to support inode and other fields in stat.
 #include <sys/types.h>
-#include <map>
 
 #ifdef _MSC_VER
 typedef unsigned short mode_t;
@@ -77,15 +76,27 @@ class FileEntry {
     File.reset(0); // rely on destructor to close File
   }
 
-  FileEntry(const FileEntry &) LLVM_DELETED_FUNCTION;
-  void operator=(const FileEntry &) LLVM_DELETED_FUNCTION;
-
 public:
+  FileEntry(llvm::sys::fs::UniqueID UniqueID, bool IsNamedPipe, bool InPCH)
+      : Name(0), UniqueID(UniqueID), IsNamedPipe(IsNamedPipe), InPCH(InPCH),
+        IsValid(false)
+  {}
+  // Add a default constructor for use with llvm::StringMap
   FileEntry()
       : Name(0), UniqueID(0, 0), IsNamedPipe(false), InPCH(false),
         IsValid(false)
   {}
 
+  FileEntry(const FileEntry &FE) {
+    memcpy(this, &FE, sizeof(FE));
+    assert(!File && "Cannot copy a file-owning FileEntry");
+  }
+
+  void operator=(const FileEntry &FE) {
+    memcpy(this, &FE, sizeof(FE));
+    assert(!File && "Cannot assign a file-owning FileEntry");
+  }
+
   const char *getName() const { return Name; }
   bool isValid() const { return IsValid; }
   off_t getSize() const { return Size; }
@@ -117,11 +128,14 @@ class FileManager : public RefCountedBase<FileManager> {
   IntrusiveRefCntPtr<vfs::FileSystem> FS;
   FileSystemOptions FileSystemOpts;
 
+  class UniqueDirContainer;
+  class UniqueFileContainer;
+
   /// \brief Cache for existing real directories.
-  std::map<llvm::sys::fs::UniqueID, DirectoryEntry> UniqueRealDirs;
+  UniqueDirContainer &UniqueRealDirs;
 
   /// \brief Cache for existing real files.
-  std::map<llvm::sys::fs::UniqueID, FileEntry> UniqueRealFiles;
+  UniqueFileContainer &UniqueRealFiles;
 
   /// \brief The virtual directories that we have allocated.
   ///
-- 
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