differences w/ enum in for loop between 3.3.2 and 3.4.3

[Steve deRosier <derosier at pianodisc dot com>]

Perhaps this is now against standard ISO C++ now, but in g++ 3.3.2, the following code compiled (snipped and adjusted of course):

class whatever 
{
 private:
   typedef enum { BUFF_LEFT=0, BUFF_RIGHT=1, BUFF_SIZE=2 } eBuffSide;
}

void whatever::function( void )
{
 for( eBuffSide i = BUFF_LEFT; i <= BUFF_RIGHT; (int(i))++ )
 {
   function2( i )
   ...
 }
}

Now with 3.4.3 I get an error:
"error: ISO C++ forbids cast to non-reference type used as lvalue"

What gives?

Removing the cast gives me an error about not being able to find a postfix operator++.  To make this compile under 3.4.3 I have to code as:

 for( int i = BUFF_LEFT; i <= BUFF_RIGHT; i++ )
 {
   function2( eBuffSide(i) )
   ...
 }

Is there a better way to do this?  (And no, I don't want to make eBuffSide into a class of its own w/ proper operator overloading, it is just intended to be a class-scope named constant.)

- Steve