[boost] [filesystem] broken on non-wchar platforms (was: [offtopic] cygwin and wchar)

Subject: [boost] [filesystem] broken on non-wchar platforms (was: [offtopic] cygwin and wchar)
From: Eric Niebler (eric_at_[hidden])
Date: 2010-08-05 15:06:06

On 8/5/2010 12:18 PM, John Maddock wrote:
> Eric Niebler wrote:
>> Beman Dawes wrote:
>>> Wide character support is currently detected by libstdcpp3.hpp.
>>>
>>> Is that detection not working?
>>
>> I guess not. The filesystem library failed to build on cygwin with
>> wchar-ish errors until I installed gcc4.
> 
> I've just investigated this and:
> 
> * Boost.Config is defining the correct wide-character defect macros for
> both gcc-3 and gcc-4 on cygwin.
> * Boost.Filesystem either isn't making use of them at all (the v3 code)
> or has outdated workarounds (v2).
> 
> I'm attaching a patch for the filesystem v2 code, but the v3 code Beman
> will have to fix if this is to work on non-wide-character platforms.
> 
> BTW gcc 3 & 4 seem to co-exist quite happily on current cygwin, but as
> the default is still gcc-3 I guess we should still try and support
> non-wide-character platforms?

Thanks for the patch, John. Beman, the remaining unpatched wchar
failures in v3 seems like a fairly serious problem to me.
Agree/disagree? Is it too late for 1.44?

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com