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* [Bug c++/97376] New: Function type to function pointer type adjustment for non-type template paramter does not work when using decltype(auto)
@ 2020-10-12 4:38 anders.granlund.0 at gmail dot com
2020-10-26 16:57 ` [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter " mpolacek at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: anders.granlund.0 at gmail dot com @ 2020-10-12 4:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97376
Bug ID: 97376
Summary: Function type to function pointer type adjustment for
non-type template paramter does not work when using
decltype(auto)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: anders.granlund.0 at gmail dot com
Target Milestone: ---
Consider the following program:
#include <iostream>
#include <type_traits>
template<decltype(auto) X>
void f1()
{
}
template<void X()>
void f2()
{
}
void ff()
{
}
int main()
{
f1<ff>();
f2<ff>();
}
When compiling it with -std=c++17 -pedantic-errors it gives a compilation
error complaining that the non-type parameter X of the template f1 has type
void () and that this is not a valid type for a non-type template paramter.
The expected behaviour is that the type of X in f1 should instead be
ajusted to void (*)() . This is what happens in template f2 .
Note that clang gives the expected behaviour (no compilation errors). Compiler
explorer link comparing clang and gcc:
https://godbolt.org/z/PGbrYE
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter does not work when using decltype(auto)
2020-10-12 4:38 [Bug c++/97376] New: Function type to function pointer type adjustment for non-type template paramter does not work when using decltype(auto) anders.granlund.0 at gmail dot com
@ 2020-10-26 16:57 ` mpolacek at gcc dot gnu.org
2020-10-26 17:07 ` mpolacek at gcc dot gnu.org
2021-11-02 20:27 ` ppalka at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-10-26 16:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97376
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
Last reconfirmed| |2020-10-26
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think we have a similar PR pro this somewhere, but I'm not finding it now.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter does not work when using decltype(auto)
2020-10-12 4:38 [Bug c++/97376] New: Function type to function pointer type adjustment for non-type template paramter does not work when using decltype(auto) anders.granlund.0 at gmail dot com
2020-10-26 16:57 ` [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter " mpolacek at gcc dot gnu.org
@ 2020-10-26 17:07 ` mpolacek at gcc dot gnu.org
2021-11-02 20:27 ` ppalka at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-10-26 17:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97376
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
s/pro/for/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter does not work when using decltype(auto)
2020-10-12 4:38 [Bug c++/97376] New: Function type to function pointer type adjustment for non-type template paramter does not work when using decltype(auto) anders.granlund.0 at gmail dot com
2020-10-26 16:57 ` [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter " mpolacek at gcc dot gnu.org
2020-10-26 17:07 ` mpolacek at gcc dot gnu.org
@ 2021-11-02 20:27 ` ppalka at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: ppalka at gcc dot gnu.org @ 2021-11-02 20:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97376
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
CC| |ppalka at gcc dot gnu.org
Target Milestone|--- |12.0
--- Comment #3 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Fixed for GCC 12 with r12-4238 aka the fix for PR61355
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-11-02 20:27 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2020-10-12 4:38 [Bug c++/97376] New: Function type to function pointer type adjustment for non-type template paramter does not work when using decltype(auto) anders.granlund.0 at gmail dot com
2020-10-26 16:57 ` [Bug c++/97376] Function type to function pointer type adjustment for non-type template parameter " mpolacek at gcc dot gnu.org
2020-10-26 17:07 ` mpolacek at gcc dot gnu.org
2021-11-02 20:27 ` ppalka at gcc dot gnu.org
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