Re: again: sizeof(wchar_t)

[Graham Nash <gnash at ncube dot com>]

I have built a GCC cross-compiler (Solaris and linux to our odd 
platform) and this automatically defines __WCHAR_TYPE__ which is used as 
the basis for a kind of definition of wchar_t:
   typedef __WCHAR_TYPE__ __gwchar_t
(see inttypes.h). It appears to default to "int" so can be used in a 
sizeof(expression).

I'm using 3.2.2 so it may have all gotten changed since then.

--g

Artem B. Bityuckiy wrote:

> Eljay Love-Jensen wrote:
>
> > Hi Artem,
> >
> > Use:
> > #if WCHAR_BITSIZE == 16
> > blah blah blah
> > #elif WCHAR_BITSIZE == 32
> > blah blah blah
> > #else
> > #error Unsupported/unknown wchar_t bitsize.
> > #endif
> >
> > When you are compiling your code with 32-bit wchar_t:
> > g++ -DWCHAR_BITSIZE=32 foo.cpp
> >
> > When you are compiling your code with 16-bit wchar_t:
> > g++ -DWCHAR_BITSIZE=16 foo.cpp
>
>
> The specific is that I'm upgrading Newlib itself. I'm adding locale 
> and some C99 features support to it (Newlib isn't fully C99 
> complient). This is bad way to use such hack. This is like MAX_INT 
> macro. Do you imagine, for example, glibc requires you to compile it 
> with make CFLAGS+=-DMAX_INT=32? (this is just analogy) :-)
> I hope there is some other way exists...
>
> Thanks.