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Re: Builtin types, <limits.h>, <stdint.h> etc.
"Martin v. Loewis" <martin@loewis.home.cs.tu-berlin.de> writes:
> > There are enough options in GCC to vary the ABI, or to adjust the
> > sizes of standard types (e.g. -mint64, -mlong64, -mlong32 on mips;
> > -mint32, -mint16 on pdp11) that presuming that a single consistent
> > ABI for each platform can be agreed with the vendors seems unwise.
...
> For hosted environments, it seems reasonable to expect a single
> consistent ABI. Delegating ABI decisions to the compiler user would be
> unwise; she normally couldn't care less.
As an example, on AIX/ppc the size of 'long' and pointers can be 32
bits or 64 bits, controlled by a compiler switch, and the header files
and libraries adjust themselves.
The significance of this is that intptr_t needs to change depending on
the setting of this flag.
--
- Geoffrey Keating <geoffk@cygnus.com>