Re: [Boost-users] [multi-index]/shared_ptr template issue - compiles onMSVC8 but not gcc

From: JOAQUIN LOPEZ MU?Z (joaquin_at_[hidden])
Date: 2007-09-20 18:07:04

Hello Mark,

----- Mensaje original -----
De: Mark Schlegel <moschleg_at_[hidden]>
Fecha: Jueves, Septiembre 20, 2007 11:24 pm
Asunto: [Boost-users] [multi-index]/shared_ptr template issue - 
compiles on
MSVC8 but not gcc
Para: boost-users_at_[hidden]

[...]
> //  this AGE_INDEX does not on gcc but DOES compile on MSVC8
> typedef  AgedMap<T>::AGEDMAPTYPE::index<agetag>::type AGE_INDEX;

The correct syntax is

  typedef typename AgedMap<T>::AGEDMAPTYPE::template 
index<agetag>::type AGE_INDEX;

(note the intervening template keyword) which, just for
succintness, in your particular ought to be the same, I think, as

  typedef typename MIContainer::template index<agetag>::type AGE_INDEX;

The dependent template keyword can cause problems in non-conformant
compilers. If you meet those, try the variants:

  typedef typename boost::multi_index::index<
    typename AgedMap<T>::AGEDMAPTYPE,agetag>::type AGE_INDEX;

or

  typedef typename boost::multi_index::index<
    MIContainer,agetag>::type AGE_INDEX;

Good luck,

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo