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* [Bug c++/61663] New: [DR 976] Deduction for const T& conversion functions @ 2014-07-01 11:36 david.d.kretzmer at gmail dot com 2014-12-14 1:01 ` [Bug c++/61663] " ville.voutilainen at gmail dot com ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: david.d.kretzmer at gmail dot com @ 2014-07-01 11:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61663 Bug ID: 61663 Summary: [DR 976] Deduction for const T& conversion functions Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: david.d.kretzmer at gmail dot com GCC 4.9.0 rejects the following code: struct F { template<class T> operator const T&() { static T t; return t; } }; int main() { F f; int i = f; // error: cannot convert 'F' to 'int' in initialization } As explained in the defects report (http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#976) this used to be invalid but after the corrections in 14.8.2.3 [temp.deduct.conv] paragraphs 1-3 the above code should compile. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/61663] [DR 976] Deduction for const T& conversion functions 2014-07-01 11:36 [Bug c++/61663] New: [DR 976] Deduction for const T& conversion functions david.d.kretzmer at gmail dot com @ 2014-12-14 1:01 ` ville.voutilainen at gmail dot com 2021-12-03 2:23 ` pinskia at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: ville.voutilainen at gmail dot com @ 2014-12-14 1:01 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61663 Ville Voutilainen <ville.voutilainen at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |rejects-valid Status|UNCONFIRMED |NEW Last reconfirmed| |2014-12-14 CC| |ville.voutilainen at gmail dot com Ever confirmed|0 |1 Known to fail| |4.8.2, 4.9.1, 5.0 --- Comment #1 from Ville Voutilainen <ville.voutilainen at gmail dot com> --- Clang also rejects the code. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/61663] [DR 976] Deduction for const T& conversion functions 2014-07-01 11:36 [Bug c++/61663] New: [DR 976] Deduction for const T& conversion functions david.d.kretzmer at gmail dot com 2014-12-14 1:01 ` [Bug c++/61663] " ville.voutilainen at gmail dot com @ 2021-12-03 2:23 ` pinskia at gcc dot gnu.org 2022-11-20 19:30 ` pinskia at gcc dot gnu.org 2023-06-10 21:23 ` cvs-commit at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-12-03 2:23 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61663 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rs2740 at gmail dot com --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- *** Bug 63217 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/61663] [DR 976] Deduction for const T& conversion functions 2014-07-01 11:36 [Bug c++/61663] New: [DR 976] Deduction for const T& conversion functions david.d.kretzmer at gmail dot com 2014-12-14 1:01 ` [Bug c++/61663] " ville.voutilainen at gmail dot com 2021-12-03 2:23 ` pinskia at gcc dot gnu.org @ 2022-11-20 19:30 ` pinskia at gcc dot gnu.org 2023-06-10 21:23 ` cvs-commit at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2022-11-20 19:30 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61663 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |alvinhochun at gmail dot com --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- *** Bug 107771 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/61663] [DR 976] Deduction for const T& conversion functions 2014-07-01 11:36 [Bug c++/61663] New: [DR 976] Deduction for const T& conversion functions david.d.kretzmer at gmail dot com ` (2 preceding siblings ...) 2022-11-20 19:30 ` pinskia at gcc dot gnu.org @ 2023-06-10 21:23 ` cvs-commit at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2023-06-10 21:23 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61663 --- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Nathan Sidwell <nathan@gcc.gnu.org>: https://gcc.gnu.org/g:80f075b410125bddb31459428760645baba1a69f commit r14-1689-g80f075b410125bddb31459428760645baba1a69f Author: Nathan Sidwell <nathan@acm.org> Date: Sat Jun 10 12:42:17 2023 -0400 c++: Adjust conversion deduction [PR61663][DR976] Drop the return type's reference before doing cvqual and related decays. gcc/cp/ PR c++/61663 * pt.cc (maybe_adjust_types_for_deduction): Implement DR976. gcc/testsuite/ * g++.dg/template/pr61663.C: New. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-06-10 21:23 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-07-01 11:36 [Bug c++/61663] New: [DR 976] Deduction for const T& conversion functions david.d.kretzmer at gmail dot com 2014-12-14 1:01 ` [Bug c++/61663] " ville.voutilainen at gmail dot com 2021-12-03 2:23 ` pinskia at gcc dot gnu.org 2022-11-20 19:30 ` pinskia at gcc dot gnu.org 2023-06-10 21:23 ` cvs-commit at gcc dot gnu.org
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