Re: [AD] PATCH: updated mprotect patch for allegro-4.2.1 which also work on Linux

[Robert Jr Ohannessian <rohannessian@xxxxxxxxxx>]

> Normal conventions say that sizeof(long) is the largest integer an arch
> can represent unless sizeof(int) is larger then that in which case
> sizeof(long) == sizeof(int)

The C standard does not mandate that any basic type be natively supported.


> long long is not a C basis type.

Yes. Please see the C standard (ANSI ISO IEC 9899-1999), section 6.2.5.4:

"There are five standard signed integer types, designated as signed 
char, short int, int, long int, and long long int. (These and other 
types may be designated in several additional ways, as described in 
6.7.2.) There may also be implementation-defined extended signed integer 
types.28) The standard and extended signed integer types are 
collectively called signed integer types.29"




Hans de Goede wrote:
> Robert Jr Ohannessian wrote:
>
> > Hans de Goede wrote:
> >
> > > What the !@#$% MS idiots what were they thinking everyone uses long 
> > > == 64 bits on 64 bit archs, so hey lets be microsoft lets do it 
> > > different.
> >
> >
> > Technically, Microsoft's implementation is full C standard compliant. 
> > All you know about 'long' is that:
> >
> > 1) sizeof(long long) >= sizeof(long) >= sizeof(int)
> > 2) LONG_MIN -2147483647 // -(^231 - 1)  (maximum value)
> >    LONG_MAX +2147483647 // 2^31 - 1     (minimum value)
> >
> > Any other assumptions you make is at your own risk. C does not even 
> > guarentee 2's complement representation.
>
> Normal conventions say that sizeof(long) is the largest integer an arch 
> can represent unless sizeof(int) is larger then that in which case 
> sizeof(long) == sizeof(int)
>
> > See the C standard, second 5.2.4.2.1, 6.2.5 and 6.3.1.1.
> >
> >
> > 'long long' is the only C basic type that requires at least 64-bit of 
> > storage (but not strictly so).
>
> long long is not a C basis type.
>
> Regards,
>
> Hans
>
>
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