Re: [boost] [Boost-users] [endian] Boost.Endian library added for 1.57.0

Subject: Re: [boost] [Boost-users] [endian] Boost.Endian library added for 1.57.0
From: Beman Dawes (bdawes_at_[hidden])
Date: 2014-08-15 18:19:23

On Fri, Aug 15, 2014 at 1:51 PM, Lars Viklund <zao_at_[hidden]> wrote:

> On Fri, Aug 15, 2014 at 11:36:40AM -0400, Beman Dawes wrote:
> > If anyone has access to a big-endian platform with a modern C++ compiler,
> > please, please run the endian test suite and report the results. All
> > testing and use in recent years has been on little-endian platforms, so
> > big-endian platform testing is a worry.
>
> I gave it a try with a 1.56 source tree and Endian checked out at commit
> 49866e07842e4b2b9c2d8e76b2c7fb3a61a1bdd2 on the three big-endian
> configurations I had handy:
>
> sparc64 FreeBSD 10.0-RELEASE with their stock GCC 4.2.1;
> powerpc AIX 5.3 with our own GCC 4.9.1;
> powerpc AIX 5.3 with IBM XL C/C++ V11.1.
>
> 'converter_test' fails across all three, see attached log files.
>

These four test cases were failing for all three compilers:

converter_test.cpp(225): test 'be::htobe(native) == little' failed in
function '<unnamed>::test<short>()': '-3838' != '753'
converter_test.cpp(226): test 'be::htole(native) == big' failed in function
'<unnamed>::test<short>()': '753' != '-3838'
converter_test.cpp(232): test 'x == little' failed in function
'<unnamed>::test<short>()': '-3838' != '753'
converter_test.cpp(233): test 'x == big' failed in function
'<unnamed>::test<short>()': '753' != '-3838'

You can check me, but I think I had the big/little results reversed. I've
pushed up a fix on the develop branch.

>
> XLC appears to additionally fail to link 'endian_operations_test', but I
> don't know if you consider it a generally working compiler :)
>

I'd need help from a platform expert on that one. So I'm going to ignore it
unless someone steps forward.

There is also a warning message which I will check if it shows up on other
compilers.

Thanks, this has been a great help!

--Beman