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* [Bug c++/64519] New: variadic template as the first argument @ 2015-01-07 9:12 roman.kurc at wp dot pl 2021-07-31 21:59 ` [Bug c++/64519] " pinskia at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: roman.kurc at wp dot pl @ 2015-01-07 9:12 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64519 Bug ID: 64519 Summary: variadic template as the first argument Product: gcc Version: 4.9.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: roman.kurc at wp dot pl Created attachment 34392 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34392&action=edit sample code It seems that passing an empty argument to a variadic template results in assigning void type to the argument. Such a behavior can be seen in the following cases: static_assert( std::is_same< decltype(B::test()), B::CharA<3> >::value == false, "test( ) should evaluate to fun( )" ); test( TA... args ) is called with no parameters then I<TA...>::template sfinae_2<B>(args...,0) and args... gets void type. The same happens in calls presented below and it does not matter if template is instantinated or only its type is deduced. static_assert( (sizeof(B::test()) == sizeof(B::CharA<1>)), "test( ) should evaluate to fun ()" ); static_assert( std::is_same< decltype(B::test()), B::CharA<1> >::value, "test() should evaluate to fun()" ); ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/64519] variadic template as the first argument 2015-01-07 9:12 [Bug c++/64519] New: variadic template as the first argument roman.kurc at wp dot pl @ 2021-07-31 21:59 ` pinskia at gcc dot gnu.org 2021-07-31 21:59 ` pinskia at gcc dot gnu.org 2021-08-27 0:20 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-07-31 21:59 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64519 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |8.4 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Fixed in GCC 8.4, 9.3 and 10+. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/64519] variadic template as the first argument 2015-01-07 9:12 [Bug c++/64519] New: variadic template as the first argument roman.kurc at wp dot pl 2021-07-31 21:59 ` [Bug c++/64519] " pinskia at gcc dot gnu.org @ 2021-07-31 21:59 ` pinskia at gcc dot gnu.org 2021-08-27 0:20 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-07-31 21:59 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64519 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- . ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/64519] variadic template as the first argument 2015-01-07 9:12 [Bug c++/64519] New: variadic template as the first argument roman.kurc at wp dot pl 2021-07-31 21:59 ` [Bug c++/64519] " pinskia at gcc dot gnu.org 2021-07-31 21:59 ` pinskia at gcc dot gnu.org @ 2021-08-27 0:20 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-08-27 0:20 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64519 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=93140 --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- By the way this was most likely fixed by the patch which fixed PR 93140. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-08-27 0:20 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-01-07 9:12 [Bug c++/64519] New: variadic template as the first argument roman.kurc at wp dot pl 2021-07-31 21:59 ` [Bug c++/64519] " pinskia at gcc dot gnu.org 2021-07-31 21:59 ` pinskia at gcc dot gnu.org 2021-08-27 0:20 ` pinskia at gcc dot gnu.org
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