Re: gnulib:test-stdalign failing on powerpc-darwin8, gcc-4.0

[Paul Eggert]

David Fang wrote:
> Hi Paul,
>      I tried applying the patch (just the stdalign.in.h bit) to the
> powerpc-darwin8 build, but I still see (when changing the assert to printf):

Can you deduce why the fix didn't work?  It should have inserted this:

> +#elif (defined __APPLE__ && defined __MACH__                  \
> +         ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__)                 \
> +         : __GNUC__)

and that should be false on your platform because __APPLE__ and __MACH__ should 
be defined, __GNUC__ should be 4, and __GNUC_MINOR__ should be zero.  Why is it 
true?  What are the values of __APPLE__, etc.?  That is, what is the output of 
running 'gcc -E foo.c | tail' when foo.c contains the following?

#include <stdio.h>
"__GNUC__" __GNUC__
"__GNUC_MINOR__" __GNUC_MINOR__
"__APPLE__" __APPLE__
"__MACH__" __MACH__