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From: "fchelnokov at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/103807] New: Unable to make template class instance with default parameter of lambda::function Date: Wed, 22 Dec 2021 14:17:38 +0000 [thread overview] Message-ID: <bug-103807-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103807 Bug ID: 103807 Summary: Unable to make template class instance with default parameter of lambda::function Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: fchelnokov at gmail dot com Target Milestone: --- Below code: ``` template <auto x = +[]{}> struct A {}; int main() { [[maybe_unused]] A x; } ``` is accepted by Clang and MSVC. But GCC prints the error: ``` error: class template argument deduction failed: 5 | [[maybe_unused]] A x; | ^ <source>:5:24: error: no matching function for call to 'A()' ``` Demo: https://gcc.godbolt.org/z/4azGT5fso
next reply other threads:[~2021-12-22 14:17 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-22 14:17 fchelnokov at gmail dot com [this message] 2021-12-22 14:23 ` [Bug c++/103807] " pinskia at gcc dot gnu.org 2021-12-22 15:21 ` pinskia at gcc dot gnu.org 2023-05-11 14:38 ` cvs-commit at gcc dot gnu.org 2023-05-11 14:39 ` ppalka at gcc dot gnu.org 2023-05-12 15:08 ` cvs-commit at gcc dot gnu.org 2023-05-12 15:25 ` ppalka at gcc dot gnu.org 2024-04-13 20:46 ` pinskia at gcc dot gnu.org
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