[boost] Iterator Adaptor Bug with Named Template Parameters

From: Dale (dale.peakall_at_[hidden])
Date: 2002-10-07 06:06:57

Compiler: GCC 3.1
Boost Version: 1.28.0

If you attempt to instantiate an iterator adaptor over a non-iterator type
and just specify Base, Policies, Value and then use named parameters for
Category and Distance the iterator adaptor class attempts to instantiate
std::iterator_traits over the base class... which fails as the base class
doesn't define any of the appropriate typedefs.

Specifying all the parameters (without using named template paramters)
solves
the problem.

However, the documentation suggests that if you specify Value, Reference and
Pointer should default to Value& and Value* rather than using
std::iterator_traits.

Perhaps they do, but it doesn't help if it still tries to instantiate
iterator_traits.

        - Dale.