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From: "ppalka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/95010] New: Recursive function template with function parameter of type decltype([]{}) is rejected Date: Fri, 08 May 2020 14:39:23 +0000 [thread overview] Message-ID: <bug-95010-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95010 Bug ID: 95010 Summary: Recursive function template with function parameter of type decltype([]{}) is rejected Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: ppalka at gcc dot gnu.org Target Milestone: --- $ cat testcase.C template<typename T> void foo(decltype([]{}) *s) { if (0) foo<T>(s); } void bar() { foo<int>(nullptr); } $ g++ -std=c++2a testcase.C testcase.C: In instantiation of ‘void foo(decltype (<lambda>)*) [with T = int; decltype (<lambda>) = foo<int>::<lambda()>]’: testcase.C:8:19: required from here testcase.C:4:12: error: cannot convert ‘<lambda()>*’ to ‘<lambda()>*’ 4 | foo<T>(s); | ^ | | | <lambda()>* testcase.C:2:26: note: initializing argument 1 of ‘void foo(decltype (<lambda>)*) [with T = int; decltype (<lambda>) = foo<int>::<lambda()>]’ 2 | void foo(decltype([]{}) *s) { | ~~~~~~~~~~~~~~~~^ We should also accept: template<typename T> void foo(decltype([]{}) *s, decltype(s) q) { foo<T>(q, s); } void bar() { foo<int>(nullptr, nullptr); }
next reply other threads:[~2020-05-08 14:39 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-08 14:39 ppalka at gcc dot gnu.org [this message] 2023-01-19 6:35 ` [Bug c++/95010] " pinskia at gcc dot gnu.org 2024-04-13 7:38 ` pinskia at gcc dot gnu.org
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