[SF 2715031] DynamicAny double to float conversion

Foundation/include/Poco/Dynamic/VarHolder.h

@@ -212,11 +212,16 @@ protected:
 		poco_static_assert (std::numeric_limits<T>::is_signed);
 
 		if (std::numeric_limits<F>::is_integer)
+		{
 			checkUpperLimit<F,T>(from); 
+			checkLowerLimit<F,T>(from);
+		}
 		else
+		{
 			checkUpperLimitFloat<F,T>(from); 
-
+			checkLowerLimitFloat<F,T>(from); 
-		checkLowerLimit<F,T>(from);
+		}
+		
 		to = static_cast<T>(from);
 	}
 
@@ -313,6 +318,13 @@ private:
 			throw RangeException("Value too large.");
 	}
 
+	template <typename F, typename T>
+	void checkLowerLimitFloat(const F& from) const
+	{
+		if (from < -std::numeric_limits<T>::max()) 
+			throw RangeException("Value too small.");
+	}
+
 	template <typename F, typename T>
 	void checkLowerLimit(const F& from) const
 	{

Foundation/testsuite/src/VarTest.cpp

@@ -934,6 +934,9 @@ void VarTest::testChar()
 
 void VarTest::testFloat()
 {
+	Var any("0");
+	float f = any;
+
 	float src = 32.0f;
 	Var a1 = src;
 	
@@ -1022,6 +1025,10 @@ void VarTest::testFloat()
 
 void VarTest::testDouble()
 {
+	double d = 0;
+	Var v(d);
+	float f = v;
+
 	double src = 32.0;
 	Var a1 = src;