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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)
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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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