Re: [Boost-users] [parallel graph] error building parallel BGL

Subject: Re: [Boost-users] [parallel graph] error building parallel BGL
From: Jeremiah Willcock (jewillco_at_[hidden])
Date: 2013-02-25 11:26:17

On Mon, 25 Feb 2013, Steven Watanabe wrote:

> AMDG
>
> On 02/25/2013 08:05 AM, Jeremiah Willcock wrote:
>> On Mon, 25 Feb 2013, The Maschine wrote:
>>
>>> Hi Jeremiah,
>>> I can confirm that ParallelBGL that comes with 1.53 compiles.
>>> The problem with this one is that when I try to compile the example
>>> (again from 1.53) I get this problem:
>>>
>>> /usr/local/include/boost/graph/distributed/mpi_process_group.hpp:419:28:
>>> No viable conversion from
>>> 'shared_ptr<boost::graph::distributed::mpi_process_group::impl>' to
>>> 'bool'
>>>
>>> 1) Any ideas?
>>> 2) Any location that I can find more examples of the Parallel BGL?
>>
>> Where is the example that you are trying from?  The ones in the Boost
>> tree all pass for me.  If you write a simple test that just makes a
>> Boost shared_ptr<int> and tries to convert it to a bool, does that work
>> (even an implicit conversion should work, I think).
>>
>
> I think shared_ptr was recently changed to use
>
> explicit operator bool
>
> in C++11.

That's the kind of thing I suspect is occurring; I know that the trunk 
versions of some Boost components that use shared_ptr were broken for a 
while.

-- Jeremiah Willcock