QUESTION: strange behaviour of typedef enum and __attribute__((packed)) using sh-hms-g++ 3.0.3

[Fabio Giovagnini]

Great, I was searching this such a flag but untill now I wasn't able to find 
it. Does it works with gcc too?
Thanks.


Alle 10:28, mercoledì 11 dicembre 2002, David Brown ha scritto:
> > The sense is to save bytes if my enum type is lower than 255 values; I
>
> develop
>
> > for embedded systems with few kbytes of ram;
> >
> > > What does your HITACHI do, when accessing a data type, bigger than one
> > > byte, on an even address (aligned(1)) ?
> >
> > When I'm sure my enum type is lower than 255 values, an unsigned char is
> > enougth.
> >
> > > You dont expect a size of 4 for your enum - what's the sizeof(int) on
> > > your machine ?
> >
> > my sizeof(int) in 4, but I'd like to give my enum sizeof(unsigned char),
>
> and
>
> > using gcc I can.
> >
> > Thanks.
>
> Why not try the -fshort-enums compiler flag?  I have never used the Hitachi
> processors, but I use gcc on the 68332 and the msp430.  There are some
> compiler flags that I always use because they make sense on embedded
> systems - -fshort-enums, -ffast-math, -funsigned-char,
> -funsigned-bitfields.
>
>
>
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