[tlbuild] lcdf-typetools-2.85 doesn't compile with gcc-3.4.2 on old FreeBSD-5

[Eddie Kohler]

A future release will do this using sizeof() only which should fix the problem.

E


On 02/07/2011 09:56 AM, Peter Breitenlohner wrote:
> On Mon, 7 Feb 2011, Peter Breitenlohner wrote:
>
>> I have no problem with g++-3.4.6, but I see that my (linux) stddef.h
>> from 3.3.3 has
>> #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
>> whereas 3.4.6 has
>> #ifndef __cplusplus
>> #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
>> #else
>> #define offsetof(TYPE, MEMBER) \
>> (__offsetof__ (reinterpret_cast <size_t> \
>> (&reinterpret_cast <const volatile char &> \
>> (static_cast<TYPE *> (0)->MEMBER))))
>> #endif
>
> Hi Nikola, Eddie, Jonathan,
>
> Looking through the gcc-3.4.6 ChangeLog I found these entries:
>
> 2004-09-06 Release Manager
>
> * GCC 3.4.2 released.
>
> 2004-08-11 Mark Mitchell <mark at codesourcery.com>
>
> PR c++/16618
> * ginclude/stddef.h (offsetof): Refine C++ definition.
>
> 2004-07-01 Release Manager
>
> * GCC 3.4.1 released.
>
> This suggests that there was a bug fixed between 3.4.1 and 3.4.2, although
> it is somewhat strange that the bug is still present in gcc-3.4.2 from
> FreeBSD-5.
>
> Since the alternatives with sizeof(memo_t) have their own portability
> problems, it might be best to stick to the original code with offsetof (that
> should either yield an error or produce the correct value).
>
> Nikola,
>
> you can always apply a local patch to compile lcdf-typetools for FreeBSD-5
> using gcc-3.4.2.
>
> Regards
> Peter Breitenlohner <peb at mppmu.mpg.de>