Re: [Tinycc-devel] casting bug?

[Felix Nawothnig]

Alexander Strasser wrote:
>   This no-guarantee-about-sizes-in-C thing begins to hurt nowadays ;)

ANSI C89 guarantees quite some stuff about sizes:

At least 8 bit for chars, at least 16 bit for shorts and ints, and at 
least 32 bit for longs (and I guess ISO C99 adds at least 64 bit for 
long longs).

It also guarantees that sizeof(char) <= sizeof(short) <= sizeof(int) <= 
sizeof(long). (again I guess ISO C99 adds <= sizeof(long long))

And then there are the fixed size types in ISO C99 ofcourse...

> Maybe it is really best to use special types like int_fast32_t
> these times... (or role your own set of types to replace them
> with the appropriate type depending on compiler and arch).

There is no such thing as a fast 32bit integer on sane (read: non 
x86-64) 64bit architectures.

Felix