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diff --git a/include/cppunit/SourceLine.h b/include/cppunit/SourceLine.h
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+++ b/include/cppunit/SourceLine.h
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+#ifndef CPPUNIT_SOURCELINE_H
+#define CPPUNIT_SOURCELINE_H
+
+#include <cppunit/Portability.h>
+#include <string>
+
+/** Constructs a SourceLine object initialized with the location where the macro is expanded.
+ * Used to write your own assertion macros.
+ * \see Asserter for example of usage.
+ */
+#define CPPUNIT_SOURCELINE() ::CppUnit::SourceLine( __FILE__, __LINE__ )
+
+
+namespace CppUnit
+{
+
+/*! \class SourceLine
+ * \brief This class represents the location of a line of text in a specified file.
+ */
+class SourceLine
+{
+public:
+  SourceLine();
+
+  SourceLine( const std::string &fileName,
+              int lineNumber );
+
+  /// Destructor.
+  virtual ~SourceLine();
+
+  bool isValid() const;
+
+  int lineNumber() const;
+
+  std::string fileName() const;
+
+  bool operator ==( const SourceLine &other ) const;
+  bool operator !=( const SourceLine &other ) const;
+
+private:
+  std::string m_fileName;
+  int m_lineNumber;
+};
+
+
+} // namespace CppUnit
+
+
+
+#endif  // CPPUNIT_SOURCELINE_H