[boost] Re: [program_options + test] cw 8.3 fails all tests

From: Howard Hinnant (hinnant_at_[hidden])
Date: 2004-08-26 08:47:15

On Aug 26, 2004, at 7:28 AM, David Abrahams wrote:

> "Gennadiy Rozental" <gennadiy.rozental_at_[hidden]> writes:
>
>>> all program_options tests fail on cw 8.3, because boost.test refers 
>>> to the
>>> _errno variable, but that reference is somehow unresolved.
>>
>> I don't think I refer to this veriable (at least directly). Something
>> compiler related.
>
> It appears to be related to the use of std::setw.  Maybe you could
> use some hacks to try to force it to recognize errno, e.g. directly
> referencing it?  Howard, can you think of any way to approach
> debugging this?

I would start with a HelloWorld.  If that works I would gradually move 
stuff from the test into the HelloWorld until I could replicate the 
problem.  That process might identify what is causing the problem.

std::setw is a pretty simple inlined mechanism.  It does nothing but 
set a integral variable in the ios_base.  This may be a red herring.

-Howard