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From: "jlame646 at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/107111] New: GCC accepts invalid program involving function declaration with pack expansion Date: Sat, 01 Oct 2022 17:05:30 +0000 [thread overview] Message-ID: <bug-107111-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107111 Bug ID: 107111 Summary: GCC accepts invalid program involving function declaration with pack expansion Product: gcc Version: 12.1.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jlame646 at gmail dot com Target Milestone: --- The following program is incorrectly accepted by gcc. Demo: https://godbolt.org/z/rvfqzo5YW ``` template<typename T, typename... V> struct C { T v(V()...);; }; int main() { C<int> c; //works with gcc but rejected in clang C<int, double, int, int> c2; //same here: works with gcc but rejected in clang } ``` This is invalid because the construct `V()...` is actually equivalent to `V(),...`. So `V` is not expanded and this must be rejected.
next reply other threads:[~2022-10-01 17:05 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-10-01 17:05 jlame646 at gmail dot com [this message] 2022-10-01 17:11 ` [Bug c++/107111] " jlame646 at gmail dot com 2022-10-01 17:24 ` jlame646 at gmail dot com 2022-10-02 4:34 ` iamsupermouse at mail dot ru 2022-10-02 4:35 ` iamsupermouse at mail dot ru 2022-10-02 9:47 ` jlame646 at gmail dot com
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