throw exceptions ....

Posted on 2003-10-27
Last Modified: 2010-04-02
To C++ Experts,
  I got some wired results in the following code :
class Base{
     void virtual function() throw(int, double,long) ;

class Derived:public Base{
   public :
      void function();  //line 1
//   void function() throw(double, int, long);  // line 2
                                                                //comments tempararily
 If I understand correctly, the exceptions thrown in the Derived class should be at least as restrictive as the Based on. Therefore, I think line1 should not compile .... however, it compiles !!! Is there any reason or did I misunderstand anything here ??? thanks.

 Also, in the line 2, is that okay the orders of exptions are different from the one in base class ? (i.e. throw(double, int, long) instead of
throw(int, double, long) )
Thanks a lot !

meow ....
Question by:meow00

Accepted Solution

fsign21 earned 50 total points
ID: 9628484
You understood right: the exceptions thrown in the Derived class should be at least as restrictive as the Based on.
I tried with the Sun 6.0 Compiler and I get a compile error, if I try to compile
class Base{
void virtual function() throw(int) ;

class Derived:public Base{
public :
void function();

Probably, you have a compiler issue here


Expert Comment

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