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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/111712] New: Syntax error when passing function parameter as NTTP in requires-clause Date: Fri, 06 Oct 2023 05:31:11 +0000 [thread overview] Message-ID: <bug-111712-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111712 Bug ID: 111712 Summary: Syntax error when passing function parameter as NTTP in requires-clause Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: hewillk at gmail dot com Target Milestone: --- Regardless of whether the code is well-formed or not, this should be valid syntax https://godbolt.org/z/4qM9nG4WP #include <type_traits> template<bool B> void f(std::bool_constant<B> b) requires requires { typename std::bool_constant<b()>; }; int main() { f(std::true_type{}); } However, GCC givs <source>:5:54: error: template argument 1 is invalid <source>:5:37: error: invalid use of template-name 'std::bool_constant' without an argument list 5 | requires requires { typename std::bool_constant<b()>; }; | ^~~~~~~~~~~~~ In file included from <source>:1: /opt/compiler-explorer/gcc-trunk-20231005/include/c++/14.0.0/type_traits:120:11: note: 'template<bool __v> using std::bool_constant = std::__bool_constant<__v>' declared here 120 | using bool_constant = __bool_constant<__v>; | ^~~~~~~~~~~~~ <source>:5:50: error: expected '(' before '<' token 5 | requires requires { typename std::bool_constant<b()>; }; | ^ | ( <source>:5:55: error: expected primary-expression before ';' token 5 | requires requires { typename std::bool_constant<b()>; }; | ^
next reply other threads:[~2023-10-06 5:31 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-10-06 5:31 hewillk at gmail dot com [this message] 2023-10-06 9:03 ` [Bug c++/111712] " pinskia at gcc dot gnu.org 2023-10-06 13:42 ` ppalka at gcc dot gnu.org
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