[Lemon-devel] [LEMON] #294: ignore_unused_variable_warning

[Christian Bähnisch]

Hello,

>  The two instances of `ignore_unused_variable_warning()` are in different
>  namespaces, thus it should not cause conflicts.
I think this can indeed cause problems because of the "argument dependent name 
lookup" (see e.g. 
"http://en.wikipedia.org/wiki/Argument_dependent_name_lookup") which makes the 
lemon version avaiable to the boost namespace as the given object also comes 
from the lemon namespace.

For the other errors I habe to apologize, they seem to be purely boost related 
(I'm currently investigating this)

greetings, chris

Am Mittwoch, 20. Mai 2009 12:32:22 schrieb LEMON:
> #294: ignore_unused_variable_warning
> ---------------------------+-----------------------------------------------
>- Reporter:  chrisatlemon  |       Owner:  alpar
>       Type:  defect        |      Status:  new
>   Priority:  major         |   Milestone:  LEMON 1.2 release
>  Component:  core          |     Version:  hg main
> Resolution:                |    Keywords:
>   Revision:                |
> ---------------------------+-----------------------------------------------
>- Changes (by alpar):
>
>   * milestone:  => LEMON 1.2 release
>
>
> Comment:
>
>  The two instances of `ignore_unused_variable_warning()` are in different
>  namespaces, thus it should not cause conflicts.
>
>  Are you sure that this is the real root of the problems. For example I can
>  see other errors preceding the one you refer to, see below.
>
>  {{{
>  g++ testgraph.cpp $(pkg-config --cflags --libs
>  /home/alpar/projects/LEMON/local/lib/pkgconfig/lemon.pc)
>  /usr/include/boost/graph/graph_concepts.hpp: In destructor
>  'boost::concepts::VertexListGraph<G>::~VertexListGraph() [with G =
>  lemon::ListGraph]':
>  /usr/include/boost/graph/graph_concepts.hpp:164:   instantiated from
>  'static void boost::concept::requirement<Model>::failed() [with Model =
>  boost::concepts::VertexListGraphConcept<lemon::ListGraph>]'
>  /usr/include/boost/concept_check.hpp:43:   instantiated from 'void
>  boost::function_requires(Model*) [with Model =
>  boost::concepts::VertexListGraphConcept<lemon::ListGraph>]'
>  testgraph.cpp:74:   instantiated from here
>  /usr/include/boost/graph/graph_concepts.hpp:185: error: no matching
>  function for call to 'vertices(lemon::ListGraph&)'
>  /usr/include/boost/graph/graph_concepts.hpp: In member function 'void
>  boost::concepts::VertexListGraph<G>::const_constraints(const G&) [with G =
>  lemon::ListGraph]':
>  /usr/include/boost/graph/graph_concepts.hpp:187:   instantiated from
>  'boost::concepts::VertexListGraph<G>::~VertexListGraph() [with G =
>  lemon::ListGraph]'
>  /usr/include/boost/graph/graph_concepts.hpp:164:   instantiated from
>  'static void boost::concept::requirement<Model>::failed() [with Model =
>  boost::concepts::VertexListGraphConcept<lemon::ListGraph>]'
>  /usr/include/boost/concept_check.hpp:43:   instantiated from 'void
>  boost::function_requires(Model*) [with Model =
>  boost::concepts::VertexListGraphConcept<lemon::ListGraph>]'
>  testgraph.cpp:74:   instantiated from here
>  /usr/include/boost/graph/graph_concepts.hpp:199: error: no matching
>  function for call to 'vertices(const lemon::ListGraph&)'
>  }}}