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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/107065] GCC treats rvalue as an lvalue Date: Wed, 28 Sep 2022 12:50:14 +0000 [thread overview] Message-ID: <bug-107065-4-Mc94TbNqWK@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-107065-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107065 --- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- Or as a compile-time test, not run-time: template<class, class> struct is_same { static constexpr bool value = false; }; template<class T> struct is_same<T,T> { static constexpr bool value = true; }; int main() { bool b = true; static_assert( is_same<decltype(!(!b)), bool>::value, ""); auto bb = (!(!b)); static_assert( is_same<decltype(bb), bool>::value, ""); } <source>: In function 'int main()': <source>:5:52: error: static assertion failed 5 | static_assert( is_same<decltype(!(!b)), bool>::value, ""); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
next prev parent reply other threads:[~2022-09-28 12:50 UTC|newest] Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-09-28 7:35 [Bug c++/107065] New: GCC treats rvalue like lvalue jlame646 at gmail dot com 2022-09-28 12:00 ` [Bug c++/107065] GCC treats rvalue as an lvalue redi at gcc dot gnu.org 2022-09-28 12:06 ` jlame646 at gmail dot com 2022-09-28 12:09 ` jlame646 at gmail dot com 2022-09-28 12:50 ` redi at gcc dot gnu.org [this message] 2022-09-28 13:41 ` mpolacek at gcc dot gnu.org 2022-09-28 14:32 ` jlame646 at gmail dot com 2022-09-28 15:34 ` mpolacek at gcc dot gnu.org 2022-09-29 18:24 ` glisse at gcc dot gnu.org 2022-09-29 19:01 ` jakub at gcc dot gnu.org 2022-09-30 7:12 ` jakub at gcc dot gnu.org 2022-09-30 7:13 ` jakub at gcc dot gnu.org 2022-09-30 8:03 ` glisse at gcc dot gnu.org 2022-09-30 8:27 ` jakub at gcc dot gnu.org 2022-09-30 8:47 ` glisse at gcc dot gnu.org 2022-12-15 18:18 ` cvs-commit at gcc dot gnu.org 2022-12-16 9:23 ` jakub at gcc dot gnu.org 2023-02-10 17:44 ` cvs-commit at gcc dot gnu.org 2023-05-02 20:12 ` cvs-commit at gcc dot gnu.org 2023-05-03 15:19 ` cvs-commit at gcc dot gnu.org 2023-05-04 7:20 ` jakub at gcc dot gnu.org
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