Re: Results from Intel4s C++ ABI Testsuite

[Nathan Sidwell <nathan@codesourcery.com>]

Andreas Jaeger wrote:

> I get with both GCC 3.1 and 3.2 the following error:

>   missing: _Znwm
>   missing: _Znam
> make[1]: *** [operator1.pass] Error 1

> nm has instead:
>          U _Znaj
>          U _Znwj
> 
> The difference here is unsigned int versus unsigned long as type of
> the operator.  I don't know whether this is a real bug or a problem in
> the testsuite but it doesn't look critical to me.
yes. I agree. this is operator new (size_t), the ABI does not
specify what type size_t should be, and 18.1/1 says size_t comes
from cstddef, which has the same contents as C header stddef.h, modulo
some changes. I don't have a C std in front of me, but IIRC size_t
is the first of 'unsigned int', 'unsigned long', 'unsigned long long'
that can hold an object's size. So, on an ILP32 machine, it will be
'unsigned int' and operator new (size_t) will be _Znwj. If
size_t is implementation defined, then we need to fix the ABI document
to specify the choice.

nathan

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