[Boost-bugs] [Boost C++ Libraries] #12432: Forced KeyOfValue creation when using custom compare on insert_check

Subject: [Boost-bugs] [Boost C++ Libraries] #12432: Forced KeyOfValue creation when using custom compare on insert_check
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-09-02 13:19:24

#12432: Forced KeyOfValue creation when using custom compare on insert_check
-------------------------------+------------------------
 Reporter:  kiril.dimitroff@…  |      Owner:  igaztanaga
     Type:  Bugs               |     Status:  new
Milestone:  To Be Determined   |  Component:  intrusive
  Version:  Boost 1.59.0       |   Severity:  Problem
 Keywords:                     |
-------------------------------+------------------------
 Introducing key_of_value in 1.59 seems to have broken the custom compare
 feature (including subsequent versions):
 {{{
     int first;
     explicit MyClass(int i) : first(i){}
 }}}
 ''Compr'' defines strict ordering between MyClass and int.

 {{{
     typedef set< MyClass, compare<MyClass::Compr> > OrderedMap;

     ...

     int i = 1;
     auto ret = omap.insert_check(i, omap.value_comp(), commit_data);
 }}}

 triggers the following error:

 boost_1_59_0/boost/intrusive/detail/tree_value_compare.hpp:64:26: error:
 no match for call to ‘(boost::move_detail::identity<MyClass>) (const
 int&)’
     {  return KeyOfValue()(key);  }

 using gcc-5.4

 Full snippet attached

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12432>
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