diff -dprU 3 uppsrc/ide/Debuggers.old/MIValue.h uppsrc/ide/Debuggers/MIValue.h
--- uppsrc/ide/Debuggers.old/MIValue.h	Fri Aug 31 18:09:59 2012
+++ uppsrc/ide/Debuggers/MIValue.h	Fri Jan 31 18:58:52 2014
@@ -7,7 +7,7 @@ using namespace Upp;
 
 // this struct contains values returned by GDB MI interface
 typedef enum { MIString, MIArray, MITuple } MIValueType;
-class MIValue : public Moveable<MIValue>
+class MIValue : public MoveableAndDeepCopyOption<MIValue>
 {
 	private:
 		int ParsePair(String &name, MIValue &val, String const &s, int i = 0);
@@ -34,11 +34,12 @@ class MIValue : public Moveable<MIValue>
 		// check for emptyness
 		bool IsEmpty(void) const;
 		
+		MIValue &Set(String const &s) { Parse(s); return *this; }
 		MIValue &operator=(pick_ MIValue &v);
-		MIValue &operator=(String const &s);
-		MIValue();
+		MIValue() { Clear(); }
 		MIValue(MIValue pick_ &v);
-		MIValue(String const &s);
+		MIValue(const MIValue &v, int);
+		explicit MIValue(String const &s) { Parse(s); }
 		
 		void Clear(void);
 		
diff -dprU 3 uppsrc/ide/Debuggers.old/MIValue.cpp uppsrc/ide/Debuggers/MIValue.cpp
--- uppsrc/ide/Debuggers.old/MIValue.cpp	Fri Aug 31 18:09:59 2012
+++ uppsrc/ide/Debuggers/MIValue.cpp	Fri Jan 31 18:56:52 2014
@@ -194,14 +194,8 @@ MIValue &MIValue::operator=(pick_ MIValu
 	return *this;
 }
 
-MIValue::MIValue()
-{
-	Clear();
-}
-
 MIValue::MIValue(MIValue pick_ &v)
 {
-	Clear();
 	type = v.type;
 	switch(type)
 	{
@@ -219,15 +213,23 @@ MIValue::MIValue(MIValue pick_ &v)
 	}
 }
 
-MIValue::MIValue(String const &s)
-{
-	Parse(s);
-}
-
-MIValue &MIValue::operator=(String const &s)
+MIValue::MIValue(const MIValue &v, int)
 {
-	Parse(s);
-	return *this;
+	type = v.type;
+	switch(type)
+	{
+		case MIString:
+			string <<= v.string;
+			break;
+		case MIArray:
+			array <<= v.array;
+			break;
+		case MITuple:
+			tuple <<= v.tuple;
+			break;
+		default:
+			SetError("Unknown MIValue type");
+	}
 }
 
 void MIValue::Clear()