[comp.windows.ms.programmer] Bug in BC++ ??

oliverk@cabezon.uucp (Oliver Kozber) (04/05/91)

In the following code the body of the constructor is not
executed if I use my new operator.

-------------------------------------------------------------

class TEST
{
public:
    TEST( int x );
    int Num();

    void FAR *operator new ( size_t size );

    int number;
};

TEST::TEST( int x )
{
    number = x;        // *LINE* //
}

int TEST::Num()
{
    return( number );
}

void FAR *TEST::operator new ( size_t size )
{
    GLOBALHANDLE hGmem = GlobalAlloc( GMEM_MOVEABLE, size );
    TEST FAR *lpGmem = (TEST FAR *) GlobalLock( hGmem );
    return( lpGmem );
}

--------------------------------------------------------------

When I call the constructor with the global 'new' operator
the constructor executes the "*LINE*" assignment and it works
fine.

    TEST FAR *tp = ::new TEST( 5 ); // global new operator

But if I call it using my 'new' operator, "*LINE*" never
gets executed.

    TEST FAR *tp = new TEST( 5 );   // my new operator

Looking at it with the turbo debugger I see that the code 
jumps to the end of the constructor after executing my "new"
operator, i.e. it doesn't come back to the constructor to 
do the *LINE* assignment.

Why? 
Am I doing something wrong, or is this a bug in BC++. 

Thanks for any help,

Oliver Kozber
...!ogicse!lauto!oliverk