From: Dan W. (danw_at_[hidden])
Date: 2004-01-09 20:06:51
Daniel Wallin wrote:
>>>> derived make_temp_derived(){ return derived; }
>>>> //scope..
>>>> {
>>>> base const & b = make_temp_derived();
>>>> ...
>>>> } <- the created temporary should last till here?
>>
>> With my compiler, it gets destroyed immediately, so I made an
>> implementation that simply instantiates the variable.
>
> Which compiler is that? IHMO, there's only so much you should do to
> handle non-conforming compilers; if a compiler fails to handle a thing
> as simple as this it should be thrown out the window.
Doesn't look simple to me, I scratch my head real hard when I saw your
code doing that; but then agin I'm a short man among giants here :)
The compiler is still a baby, I wouldn't throw it with the bath water;
it's Digital Mars, version 8.38. Quite compliant, actually; only took
two boost defines to compile an MPL sample program. Admitedly, the list
of needed defines has been growing...
---------------------------------------------------
//file: DM.HPP -- Digital Mars C++ compiler setup:
#define BOOST_COMPILER __DMC_VERSION_STRING__
#define BOOST_HAS_LONG_LONG
#define BOOST_HAS_DESIGN_BY_CONTRACT
#define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
#define BOOST_NEEDS_PASTING_TOKEN_FOR_JUXTAPOSING
#define BOOST_NO_OPERATORS_IN_NAMESPACE
#define BOOST_NO_SFINAE
#define BOOST_NO_TEMPLATE_TEMPLATES
#define BOOST_NO_USING_TEMPLATE
#define BOOST_USE_INT_3_INSTEAD_OF_ASSERT
#pragma once
// check for exception handling support:
#ifndef _CPPUNWIND
# define BOOST_NO_EXCEPTIONS
#endif
#if (__DMC__ < 0x833)
# if defined(BOOST_ASSERT_CONFIG)
# error "Unknown compiler version - please run the configure tests
and report the results"
# endif
#endif
---------------------------------------------------
...but it's not definitive yet.
BTW, do you think the invariants code is okay now?