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* [Bug c++/110513] New: Invalid use of incomplete type std::bool_constant inside requires expression @ 2023-07-01 18:15 fchelnokov at gmail dot com 2023-07-01 18:35 ` [Bug c++/110513] " pinskia at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: fchelnokov at gmail dot com @ 2023-07-01 18:15 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110513 Bug ID: 110513 Summary: Invalid use of incomplete type std::bool_constant inside requires expression Product: gcc Version: 13.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: fchelnokov at gmail dot com Target Milestone: --- The following program #include <type_traits> struct B { bool b = true; }; // ok everywhere static_assert( std::bool_constant<B{}.b>{}() ); // error in GCC static_assert( requires() { std::bool_constant<B{}.b>{}(); } ); is accepted in Clang and MSVC, but GCC complains <source>:11:56: error: invalid use of incomplete type 'std::bool_constant<B{}.b>' 11 | static_assert( requires() { std::bool_constant<B{}.b>{}(); } ); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~ In file included from <source>:1: /opt/compiler-explorer/gcc-13.1.0/include/c++/13.1.0/type_traits:62:12: note: declaration of 'std::bool_constant<B{}.b>' 62 | struct integral_constant | ^~~~~~~~~~~~~~~~~ Online demo: https://gcc.godbolt.org/z/csKanbM88 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/110513] Invalid use of incomplete type std::bool_constant inside requires expression 2023-07-01 18:15 [Bug c++/110513] New: Invalid use of incomplete type std::bool_constant inside requires expression fchelnokov at gmail dot com @ 2023-07-01 18:35 ` pinskia at gcc dot gnu.org 2023-07-01 18:36 ` pinskia at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-07-01 18:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110513 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2023-07-01 Ever confirmed|0 |1 Keywords| |rejects-valid --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Reduced testcase: ``` template<bool a> struct bool_const1 { typedef bool T; static constexpr T value = a; constexpr T operator()(){return value;} }; struct B { bool b = true; }; // ok everywhere static_assert( bool_const1<B{}.b>{}() ); // error in GCC static_assert( requires() { bool_const1<B{}.b>{}(); } ); ``` ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/110513] Invalid use of incomplete type std::bool_constant inside requires expression 2023-07-01 18:15 [Bug c++/110513] New: Invalid use of incomplete type std::bool_constant inside requires expression fchelnokov at gmail dot com 2023-07-01 18:35 ` [Bug c++/110513] " pinskia at gcc dot gnu.org @ 2023-07-01 18:36 ` pinskia at gcc dot gnu.org 2023-07-01 18:40 ` pinskia at gcc dot gnu.org 2023-08-14 18:31 ` ppalka at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-07-01 18:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110513 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Reduced slightly more: ``` template<bool a> struct bool_const1 {}; struct B { bool b = true; }; // error in GCC static_assert( requires() { bool_const1<B{}.b>{}; } ); ``` ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/110513] Invalid use of incomplete type std::bool_constant inside requires expression 2023-07-01 18:15 [Bug c++/110513] New: Invalid use of incomplete type std::bool_constant inside requires expression fchelnokov at gmail dot com 2023-07-01 18:35 ` [Bug c++/110513] " pinskia at gcc dot gnu.org 2023-07-01 18:36 ` pinskia at gcc dot gnu.org @ 2023-07-01 18:40 ` pinskia at gcc dot gnu.org 2023-08-14 18:31 ` ppalka at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-07-01 18:40 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110513 --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The underlaying problem here is most likely the same issue as the one in PR 94332 . ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/110513] Invalid use of incomplete type std::bool_constant inside requires expression 2023-07-01 18:15 [Bug c++/110513] New: Invalid use of incomplete type std::bool_constant inside requires expression fchelnokov at gmail dot com ` (2 preceding siblings ...) 2023-07-01 18:40 ` pinskia at gcc dot gnu.org @ 2023-08-14 18:31 ` ppalka at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: ppalka at gcc dot gnu.org @ 2023-08-14 18:31 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110513 Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ed at catmur dot uk --- Comment #4 from Patrick Palka <ppalka at gcc dot gnu.org> --- *** Bug 111016 has been marked as a duplicate of this bug. *** ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-08-14 18:31 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-07-01 18:15 [Bug c++/110513] New: Invalid use of incomplete type std::bool_constant inside requires expression fchelnokov at gmail dot com 2023-07-01 18:35 ` [Bug c++/110513] " pinskia at gcc dot gnu.org 2023-07-01 18:36 ` pinskia at gcc dot gnu.org 2023-07-01 18:40 ` pinskia at gcc dot gnu.org 2023-08-14 18:31 ` ppalka at gcc dot gnu.org
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