Index: ext/libicpf/src/dumpctx.h
===================================================================
diff -u -re17c80d36eaa0430313e7d1058aa7a301d1510af -r338a33bbdb8c82416f0351408eea3243520784e5
--- ext/libicpf/src/dumpctx.h	(.../dumpctx.h)	(revision e17c80d36eaa0430313e7d1058aa7a301d1510af)
+++ ext/libicpf/src/dumpctx.h	(.../dumpctx.h)	(revision 338a33bbdb8c82416f0351408eea3243520784e5)
@@ -58,7 +58,7 @@
 public:
 /** \name Construction/destruction */
 /**@{*/
-	dumpctx(uint_t ulType, ptr_t pParam=NULL);	///< Standard constructor
+	explicit dumpctx(uint_t ulType, ptr_t pParam=NULL);	///< Standard constructor
 	~dumpctx();											///< Standard destructor
 /**@}*/	
 	
@@ -85,7 +85,7 @@
 	void dump(const char_t* pszName, const ptr_t pValue);			///< pointer dump
 /**@}*/
 protected:
-	mutex m_lock;				///< Mutex blocking class between open() and close() calls
+	mutex m_lock;				///< A mutex or d_mutex class cast to void* because of the circular dependencies problem
 	string m_strBuffer;			///< String object that will gather information about dump
 	char_t m_szBuffer[MAX_DUMP];	///< Buffer used in formatting output data
 	uint_t m_uiType;			///< Type of dump (as passed to constructor)