Mac Forum / Programming / CodeWarrior / January 2004

I'm having problems moving a bunch of legacy code to Mach and CWP9.
When you have 68k alignment turned on the following returns 8 with
Mach, but returns 6 with PEF:

#include <iostream>

typedef unsigned long ulong;

struct BookREC {
   
    short        bmanLocks;

    ulong        field1:3;
    ulong        field2:6;
    ulong        field3:2;

    ulong        field4:1;
    ulong        field5:1;
    ulong        field6:8;
    ulong        field7:1;
    ulong        field8:1;
    ulong        field9:7;
    ulong        field10:1;
    ulong        field11:1;
};

int main()
{
    using namespace std;
   
    cout << sizeof(BookREC) << endl;
   
    return 0;
}

Has anyone else ran across this?  Any ideas on how to get around this?
We probably have thousands of structs that use bit fields with no
easy way to find the ones that have problems.  We were planning on
finally upgrading from CWP8 to CWP9, but this is a show stopper.  This
works fine in CWP8 Update 3.

Thanks,
Bill