Re: [boost] Thoughts on "function_traits.hpp" (was Re: Problem indicating a template in "function_traits.hpp")

From: Douglas Gregor (gregod_at_[hidden])
Date: 2001-05-05 17:30:19

On Friday 04 May 2001 18:45, you wrote:
> on 5/2/01 8:41 PM, Daryle Walker at darylew_at_[hidden] wrote:
> > I was trying out the May 1st version of the function trial library at
> > <http://groups.yahoo.com/group/boost/files/Callback/function-05-01.zip>,
> > and I got an error from <boost/type_traits/function_traits.hpp>.  It was
> > on line 142, highlighting the word "template."  I forgot what the exact
> > error was; I think it was a syntax error.  This is on Metrowerks
> > CodeWarrior Pro 5.3 for the Mac OS, so it's probably a compiler
> > deficiency.
>
> I worked around the problem by commenting out the "template" qualifiers in
> the "function_base.hpp", "function.hpp", and "function_traits.hpp"
> (separate copy) headers.  After that, "allocator_test.cpp" and
> "policy_test.cpp" worked perfectly.  The "function_test_fail1.cpp" and
> "function_test_fail2.cpp" files choked at the right places at compile-time,
> the comparison and cross-assignment, respectively, with an illegal-operand
> error.  Unfortunately, the "function_test.cpp" file failed.  I got a few
> warnings about missing prototypes, but the main problem was that every (39)
> cross-assignment failed with an illegal-operand error.  Only assignments to
> objects of the exact same function-wrapper type were accepted.

Do the numbered function classes exhibit the same behavior? If so, perhaps 
BOOST_NO_DEPENDENT_BASE_LOOKUP would work.

I won't have any access to CodeWarrior (any version) for the foreseeable 
future, so I'll need help with this if it is ever going to run on CodeWarrior 
5.3.

        Doug