fixed output memory leak

docs/manual.html

@@ -591,7 +591,10 @@ int main(int argc, char** argv)
 </pre><p>
 
 See <tt class="filename">test4.cpp</tt> in the examples directory for the full
-example.
+example. <span class="emphasis"><em>NOTE</em></span>: if you supply your own Output object, we 
+will not delete it in the <tt class="classname">CmdLine</tt> destructor.  This 
+could lead to a (very small) memory leak if you don't take care of the object
+yourself.
 </p></div></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="EXCEPTIONS"></a>Chapter 3. Exceptions to the Rules</h2></div></div><div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><a href="#IGNORE_ARGS">Ignoring arguments</a></dt><dt><a href="#COMBINED_SWITCHES">Multiple Identical Switches</a></dt><dt><a href="#DESCRIPTION_EXCEPTIONS">Type Descriptions</a></dt></dl></div><p>
 Like all good rules, there are many exceptions.... 
 </p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="IGNORE_ARGS"></a>Ignoring arguments</h2></div></div><div></div></div><p>

docs/manual.xml

@@ -750,7 +750,10 @@ int main(int argc, char** argv)
 </programlisting>
 
 See <filename>test4.cpp</filename> in the examples directory for the full
-example.
+example. <emphasis>NOTE</emphasis>: if you supply your own Output object, we 
+will not delete it in the <classname>CmdLine</classname> destructor.  This 
+could lead to a (very small) memory leak if you don't take care of the object
+yourself.
 </para>
 </sect1>
 </chapter>

include/tclap/CmdLine.h

@@ -136,6 +136,12 @@ class CmdLine : public CmdLineInterface
 		 */
 		void deleteOnExit(Visitor* ptr);
 
+		/**
+		 * Is set to true when a user sets the output object. We use this so
+		 * that we don't delete objects that are created outside of this lib.
+		 */
+		bool _userSetOutput;
+
 	public:
 
 		/**
@@ -258,7 +264,8 @@ inline CmdLine::CmdLine(const std::string& n,
   _message(m),
   _version(v),
   _numRequired(0),
-  _delimiter(' ')
+  _delimiter(' '),
+  _userSetOutput(false)
 { 
 	_constructor();
 }
@@ -270,7 +277,8 @@ inline CmdLine::CmdLine(const std::string& m,
   _message(m),
   _version(v),
   _numRequired(0),
-  _delimiter(delim)
+  _delimiter(delim),
+  _userSetOutput(false)
 {
 	_constructor();
 }
@@ -289,6 +297,9 @@ inline CmdLine::~CmdLine()
 		 visIter != _visitorDeleteOnExitList.end(); 
 		 ++visIter) 
 		delete *visIter;
+
+	if ( !_userSetOutput )
+		delete _output;
 }
 
 inline void CmdLine::_constructor()
@@ -439,6 +450,7 @@ inline CmdLineOutput* CmdLine::getOutput()
 
 inline void CmdLine::setOutput(CmdLineOutput* co)
 {
+	_userSetOutput = true;
 	_output = co;
 }