2012/4/8 Ozkan Sezer <[email protected]>
> On Sun, Apr 8, 2012 at 3:56 PM, Ruben Van Boxem
> <[email protected]> wrote:
> > 2012/4/8 Ozkan Sezer <[email protected]>
> >>
> >> On Sun, Apr 8, 2012 at 3:37 PM, Ruben Van Boxem
> >> <[email protected]> wrote:
> >> > 2012/4/8 Ozkan Sezer <[email protected]>
> >> >>
> >> >> On Sun, Apr 8, 2012 at 3:14 PM, Ruben Van Boxem
> >> >> <[email protected]> wrote:
> >> >> > Hi,
> >> >> >
> >> >> > Clang doesn't support the __int128 stuff, and the _mingw.h header
> is
> >> >> > doing a
> >> >> > typedef that Clang does not understand.
> >> >> >
> >> >> > It is on line 218 of _mingw.h:
> >> >> >
> >> >> > #ifndef __SIZEOF_INT128__
> >> >> > typedef int __int128 __attribute__ ((__mode__ (TI)));
> >> >> > #endif
> >> >> >
> >> >> > should be:
> >> >> >
> >> >> > #if !defined(__SIZEOF_INT128__) && !defined(__clang__)
> >> >> > typedef int __int128 __attribute__ ((__mode__ (TI)));
> >> >> > #endif
> >> >> >
> >> >> > Does this seem plausible?
> >> >>
> >> >> __mode__ (TI) is the problem, I guess? If that is the case, one
> would
> >> >> like to know whether they would support it in the future.
> >> >
> >> >
> >> > Doesn't seem so:
> >> >
> >> >
> >> >
> M:/Development/mingw64/bin/../lib/clang/3.1/../../../x86_64-w64-mingw32/include\_mingw.h:220:13:
> >> > error: cannot combine with previous 'int' declaration specifier
> >> > typedef int __int128;// __attribute__ ((__mode__ (TI)));
> >> > ^
> >> > 1 error generated.
> >> >
> >> > A small test also shows that __int128 is a Clang builtin type. So the
> >>
> >> Ah. Then do they not define a macro indicating the type's size
> >> like __SIZEOF_INT128__ from gcc? If not, then your suggestion seem
> >> as the right solution to me
> >
> >
> > I can't find anything in the source, and no compiler-defined macro's.
> Only
> > for the char/short/int/long/wchar_t types. I have no idea how they
> implement
> > it or how it works. sizeof(__int128) returns 16, which seems right.
>
> I see. Then the additional clang ifdef seems as the the right solution.
>
> BTW, is it a yet-to-be-released clang 3.1 thing (judging from the
> command line you pasted here), or do the older versions of clang
> have it?
>
It's very new, in order to match libstdc++ changes incorporating the change
on GCC side:
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20120402/055712.html
So I guess only Clang 3.1 is affected. These are the version macros:
(__clang_major__ ==3) && (__clang_minor__ >= 1)
My version check thinking isn't working today and I gotta go very soon,
sorry.
Ruben
> >
> > Ruben
> >
> >>
> >>
> >> > typedef just needs to be removed for Clang.
> >> >
> >> > Ruben
> >>
> >> --
> >> O.S.
> >
>
> --
> O.S.
>
>
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