public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug libstdc++/55979] New: [C++11] std::list range construction imposes unnecessary conversion constraints @ 2013-01-14 21:12 daniel.kruegler at googlemail dot com 2013-01-14 22:14 ` [Bug libstdc++/55979] " redi at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: daniel.kruegler at googlemail dot com @ 2013-01-14 21:12 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55979 Bug #: 55979 Summary: [C++11] std::list range construction imposes unnecessary conversion constraints Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: daniel.kruegler@googlemail.com The following code provided by Jonathan compiled with gcc 4.8.0 20130113 (experimental) using the flags -Wall -std=c++11 -pedantic is rejected: //------------------------------- #include <list> struct A { A(int) { } A(const A&) = delete; A& operator=(const A&) = delete; }; int main() { int i[] = {1, 2}; std::list<A> li(i, i + 2); } //------------------------------- "[..]gcc\include\c++\4.8.0\bits\stl_list.h||In instantiation of 'std::_List_node<_Tp>::_List_node(_Args&& ...) [with _Args = {A}; _Tp = A]':| [..]\gcc\include\c++\4.8.0\ext\new_allocator.h|120|required from 'void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = std::_List_node<A>; _Args = {A}; _Tp = std::_List_node<A>]'| [..]gcc\include\c++\4.8.0\bits\stl_list.h|506|required from 'std::list<_Tp, _Alloc>::_Node* std::list<_Tp, _Alloc>::_M_create_node(_Args&& ...) [with _Args = {A}; _Tp = A; _Alloc = std::allocator<A>; std::list<_Tp, _Alloc>::_Node = std::_List_node<A>]'| [..]gcc\include\c++\4.8.0\bits\stl_list.h|1558|required from 'void std::list<_Tp, _Alloc>::_M_insert(std::list<_Tp, _Alloc>::iterator, _Args&& ...) [with _Args = {A}; _Tp = A; _Alloc = std::allocator<A>; std::list<_Tp, _Alloc>::iterator = std::_List_iterator<A>]'| [..]gcc\include\c++\4.8.0\bits\stl_list.h|1022|required from 'void std::list<_Tp, _Alloc>::push_back(std::list<_Tp, _Alloc>::value_type&&) [with _Tp = A; _Alloc = std::allocator<A>; std::list<_Tp, _Alloc>::value_type = A]'| [..]gcc\include\c++\4.8.0\bits\stl_list.h|1491|required from 'void std::list<_Tp, _Alloc>::_M_initialize_dispatch(_InputIterator, _InputIterator, std::__false_type) [with _InputIterator = int*; _Tp = A; _Alloc = std::allocator<A>]'| [..]gcc\include\c++\4.8.0\bits\stl_list.h|628|required from 'std::list<_Tp, _Alloc>::list(_InputIterator, _InputIterator, const allocator_type&) [with _InputIterator = int*; <template-parameter-2-2> = void; _Tp = A; _Alloc = std::allocator<A>; std::list<_Tp, _Alloc>::allocator_type = std::allocator<A>]'| main.cpp|13|required from here| [..]gcc\include\c++\4.8.0\bits\stl_list.h|115|error: use of deleted function 'A::A(const A&)'| main.cpp|6|error: declared here " The error is due to a call of push_back with an previous int->A conversion. Such an conversion from the iterator's value_type to the containers value_type is not feasible. The specification of the corresponding constructor is (indirectly) ruled by Table 100, expression X(i, j): "Requires: T shall be EmplaceConstructible into X from *i." Move/CopyConstructible or Convertible to value_type are not required. Instead of invoking push_back this constructor should internally invoke the equivalent of emplace_back. This issue is similar to bug 55977 involving std::vector, but occurs even with the default allocator and for all iterator categories except input iterator, therefore this issue is reported separately. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/55979] [C++11] std::list range construction imposes unnecessary conversion constraints 2013-01-14 21:12 [Bug libstdc++/55979] New: [C++11] std::list range construction imposes unnecessary conversion constraints daniel.kruegler at googlemail dot com @ 2013-01-14 22:14 ` redi at gcc dot gnu.org 2013-03-17 11:21 ` paolo.carlini at oracle dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: redi at gcc dot gnu.org @ 2013-01-14 22:14 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55979 Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-01-14 Ever Confirmed|0 |1 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/55979] [C++11] std::list range construction imposes unnecessary conversion constraints 2013-01-14 21:12 [Bug libstdc++/55979] New: [C++11] std::list range construction imposes unnecessary conversion constraints daniel.kruegler at googlemail dot com 2013-01-14 22:14 ` [Bug libstdc++/55979] " redi at gcc dot gnu.org @ 2013-03-17 11:21 ` paolo.carlini at oracle dot com 2013-03-17 18:28 ` paolo at gcc dot gnu.org 2013-03-27 11:40 ` paolo.carlini at oracle dot com 3 siblings, 0 replies; 5+ messages in thread From: paolo.carlini at oracle dot com @ 2013-03-17 11:21 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55979 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |paolo.carlini at oracle dot |gnu.org |com Target Milestone|--- |4.8.1 --- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-03-17 11:21:11 UTC --- Seems easy and fixable in 4.8.1 too. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/55979] [C++11] std::list range construction imposes unnecessary conversion constraints 2013-01-14 21:12 [Bug libstdc++/55979] New: [C++11] std::list range construction imposes unnecessary conversion constraints daniel.kruegler at googlemail dot com 2013-01-14 22:14 ` [Bug libstdc++/55979] " redi at gcc dot gnu.org 2013-03-17 11:21 ` paolo.carlini at oracle dot com @ 2013-03-17 18:28 ` paolo at gcc dot gnu.org 2013-03-27 11:40 ` paolo.carlini at oracle dot com 3 siblings, 0 replies; 5+ messages in thread From: paolo at gcc dot gnu.org @ 2013-03-17 18:28 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55979 --- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2013-03-17 18:28:01 UTC --- Author: paolo Date: Sun Mar 17 18:27:52 2013 New Revision: 196755 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196755 Log: 2013-03-17 Paolo Carlini <paolo.carlini@oracle.com> PR libstdc++/55979 * include/bits/stl_list.h (_M_initialize_dispatch(_InputIterator, _InputIterator, __false_type)): Use emplace_back. * testsuite/23_containers/list/cons/55979.cc: New. * testsuite/23_containers/list/modifiers/1.h: Adjust. * testsuite/23_containers/list/requirements/dr438/assign_neg.cc: Adjust dg-error line number. Added: trunk/libstdc++-v3/testsuite/23_containers/list/cons/55979.cc Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/stl_list.h trunk/libstdc++-v3/testsuite/23_containers/list/modifiers/1.h trunk/libstdc++-v3/testsuite/23_containers/list/requirements/dr438/assign_neg.cc ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/55979] [C++11] std::list range construction imposes unnecessary conversion constraints 2013-01-14 21:12 [Bug libstdc++/55979] New: [C++11] std::list range construction imposes unnecessary conversion constraints daniel.kruegler at googlemail dot com ` (2 preceding siblings ...) 2013-03-17 18:28 ` paolo at gcc dot gnu.org @ 2013-03-27 11:40 ` paolo.carlini at oracle dot com 3 siblings, 0 replies; 5+ messages in thread From: paolo.carlini at oracle dot com @ 2013-03-27 11:40 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55979 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-03-27 11:40:30 UTC --- Fixed 4.8.1 too. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-03-27 11:40 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-01-14 21:12 [Bug libstdc++/55979] New: [C++11] std::list range construction imposes unnecessary conversion constraints daniel.kruegler at googlemail dot com 2013-01-14 22:14 ` [Bug libstdc++/55979] " redi at gcc dot gnu.org 2013-03-17 11:21 ` paolo.carlini at oracle dot com 2013-03-17 18:28 ` paolo at gcc dot gnu.org 2013-03-27 11:40 ` paolo.carlini at oracle dot com
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).