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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) -- links below jump to the message on this page -- 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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