[boost] [Boost-bugs] [ boost-Bugs-1228050 ] Problem with mpl::transform on fusion::tuple

From: SourceForge.net (noreply_at_[hidden])
Date: 2005-06-27 01:47:59

Bugs item #1228050, was opened at 2005-06-27 01:47
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Category: mpl
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: SolodOn (solodon)
Assigned to: Aleksey Gurtovoy (agurtovoy)
Summary: Problem with mpl::transform on fusion::tuple

Initial Comment:
Whenever I try to do something like:

typedef fusion::tuple<char, short, int>  fusion_types;
typedef fusion::tuple<char*,short*,int*> fusion_pointers;

typedef mpl::transform< fusion_types, 
boost::add_pointer<mpl::_1> >::type fusion_result;

I get a compilation error, while the same thing with 
mpl::vector instead of fusion::tuple compiles perfectly 
well.

If I understand the problem right, dispatched 
implementation of push_front on tuples refers 
boost::fusion::meta::push_front, which is forward 
declared but never defined. Is it by design or was it left 
to add implementation later?

Another thing you might want to check (not directly 
related to this) is that tuple iterator does not define 
iterator category, that was required by some mpl 
algorithms.

I've got here GCC 3.4 (under Linux FC3) and boost 1.32 
taken from boost CVS.

See attachment for the program to reproduce the 
problem (uncomment two last lines) and compilation log.

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