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diff --git a/clang/tools/libclang/CXLoadedDiagnostic.h b/clang/tools/libclang/CXLoadedDiagnostic.h
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+++ b/clang/tools/libclang/CXLoadedDiagnostic.h
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+/*===-- CXLoadedDiagnostic.h - Handling of persisent diags ------*- C++ -*-===*\
+|*                                                                            *|
+|*                     The LLVM Compiler Infrastructure                       *|
+|*                                                                            *|
+|* This file is distributed under the University of Illinois Open Source      *|
+|* License. See LICENSE.TXT for details.                                      *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* Implements handling of persisent diagnostics.                              *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_CINDEX_LOADED_DIAGNOSTIC_H
+#define LLVM_CLANG_CINDEX_LOADED_DIAGNOSTIC_H
+
+#include "CIndexDiagnostic.h"
+#include "llvm/ADT/StringRef.h"
+#include "clang/Basic/LLVM.h"
+#include <string>
+#include <vector>
+
+namespace clang {
+class CXLoadedDiagnostic : public CXDiagnosticImpl {
+public:
+  CXLoadedDiagnostic() : CXDiagnosticImpl(LoadedDiagnosticKind),
+    severity(0), category(0) {}
+
+  virtual ~CXLoadedDiagnostic();
+  
+  /// \brief Return the severity of the diagnostic.
+  virtual CXDiagnosticSeverity getSeverity() const;
+  
+  /// \brief Return the location of the diagnostic.
+  virtual CXSourceLocation getLocation() const;
+  
+  /// \brief Return the spelling of the diagnostic.
+  virtual CXString getSpelling() const;
+  
+  /// \brief Return the text for the diagnostic option.
+  virtual CXString getDiagnosticOption(CXString *Disable) const;
+  
+  /// \brief Return the category of the diagnostic.
+  virtual unsigned getCategory() const;
+  
+  /// \brief Return the category string of the diagnostic.
+  virtual CXString getCategoryText() const;
+  
+  /// \brief Return the number of source ranges for the diagnostic.
+  virtual unsigned getNumRanges() const;
+  
+  /// \brief Return the source ranges for the diagnostic.
+  virtual CXSourceRange getRange(unsigned Range) const;
+  
+  /// \brief Return the number of FixIts.
+  virtual unsigned getNumFixIts() const;
+  
+  /// \brief Return the FixIt information (source range and inserted text).
+  virtual CXString getFixIt(unsigned FixIt,
+                            CXSourceRange *ReplacementRange) const;
+  
+  static bool classof(const CXDiagnosticImpl *D) {
+    return D->getKind() == LoadedDiagnosticKind;
+  }
+  
+  /// \brief Decode the CXSourceLocation into file, line, column, and offset.
+  static void decodeLocation(CXSourceLocation location,
+                             CXFile *file,
+                             unsigned *line,
+                             unsigned *column,
+                             unsigned *offset);
+
+  struct Location {
+    CXFile file;
+    unsigned line;
+    unsigned column;
+    unsigned offset;
+    
+    Location() : line(0), column(0), offset(0) {}    
+  };
+  
+  Location DiagLoc;
+
+  std::vector<CXSourceRange> Ranges;
+  std::vector<std::pair<CXSourceRange, CXString> > FixIts;
+  llvm::StringRef Spelling;
+  llvm::StringRef DiagOption;
+  llvm::StringRef CategoryText;
+  unsigned severity;
+  unsigned category;
+};
+}
+
+#endif