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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/110158] Cannot use union with std::string inside in constant expression Date: Wed, 07 Jun 2023 19:40:27 +0000 [thread overview] Message-ID: <bug-110158-4-WltSTlOLCl@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-110158-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110158 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Here is a slightly reduced testcase (for a slightly different issue still dealing with unions): ``` struct str1 { // bool a; char *var; union { char t[15]; int allocated; }; constexpr str1() : var(new char[2]) { t[0] = 0; } constexpr ~str1() {if (var != t) delete[] var; } }; typedef str1 str; constexpr bool f1() { str t{}; return true; } static_assert( f1() ); constexpr bool f() { union U{ str s; constexpr ~U(){ s.~str(); } } u{}; return true; } static_assert( f() ); ```
next prev parent reply other threads:[~2023-06-07 19:40 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-06-07 15:22 [Bug libstdc++/110158] New: " fchelnokov at gmail dot com 2023-06-07 19:40 ` pinskia at gcc dot gnu.org [this message] 2023-08-03 17:11 ` [Bug c++/110158] " ppalka at gcc dot gnu.org 2023-08-04 15:55 ` pinskia at gcc dot gnu.org 2023-08-04 16:16 ` danakj at orodu dot net 2023-09-06 18:11 ` danakj at orodu dot net 2023-09-06 18:18 ` danakj at orodu dot net 2023-09-29 11:08 ` redi at gcc dot gnu.org 2023-11-22 0:45 ` ppalka at gcc dot gnu.org 2023-11-22 11:54 ` redi at gcc dot gnu.org
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