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From: "fchelnokov at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/110416] New: Error initializing of const union variable with a mutable field Date: Mon, 26 Jun 2023 17:14:06 +0000 [thread overview] Message-ID: <bug-110416-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110416 Bug ID: 110416 Summary: Error initializing of const union variable with a mutable field Product: gcc Version: 13.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: fchelnokov at gmail dot com Target Milestone: --- This program union U { mutable int x; float y = 2; }; int main() { const U u; u.x = 1; } is accepted in Clang and MSVC, but GCC complains: <source>: In function 'int main()': <source>:7:13: error: uninitialized 'const u' [-fpermissive] 7 | const U u; | ^ <source>:1:7: note: 'const union U' has no user-provided default constructor 1 | union U { | ^ <source>:2:17: note: and the implicitly-defined constructor does not initialize 'int U::x' 2 | mutable int x; Online demo: https://gcc.godbolt.org/z/T8bqYTG5f
next reply other threads:[~2023-06-26 17:14 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-06-26 17:14 fchelnokov at gmail dot com [this message] 2023-06-26 20:19 ` [Bug c++/110416] Error initializing of const aggregate " pinskia at gcc dot gnu.org 2023-06-26 20:23 ` [Bug c++/110416] Error initializing of const union " pinskia at gcc dot gnu.org 2023-06-26 20:31 ` pinskia at gcc dot gnu.org
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