Hi Neil,
the fix for #9851 broke some of our code. We use chained range adaptors like
std::vectorstd::string separated
std::set<Foo> foos;
boost::copy(separated |
boost::adaptors::transformed(boost::bind(Foo::fromString, _1))
|
boost::adaptors::filtered(boost::bind(&Foo::isValid, _1)),
std::inserter(foos, foos.end()));
which fails with
error: constructor for 'boost::transform_iterator &), boost::_bi::list1 > >,
std::__1::__wrap_iter *>,
boost::use_default, boost::use_default>' must explicitly initialize the member
'm_f' which does not have a default constructor
transform_iterator() { }
Full testcase and error message attached.
This compiles and works with 1.55.0. git bisect shows that this fails to
compile from
5f2560f - Ticket 9851 - adaptors should perform concept check assertions.
for gcc and for clang starting with
e43796c - allow clang to use Range Concepts despite reporting GCC 4.2.
msvc-12.0 fails, too. gcc-4.8.2 and clang-3.5 (trunk) for the record.
Any chance to get this fixed for 1.56.0 ?
Yours,
Jürgen
--
* Dipl.-Math. Jürgen Hunold !
* voice: ++49 4257 300 ! Fährstraße 1
* fax : ++49 4257 300 ! 31609 Balge/Sebbenhausen
* jhunold@gmx.eu ! Germany
