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From: "fchelnokov at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/102013] New: Incorrect aggregate initialization of union Date: Sun, 22 Aug 2021 16:11:53 +0000 [thread overview] Message-ID: <bug-102013-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102013 Bug ID: 102013 Summary: Incorrect aggregate initialization of union Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: fchelnokov at gmail dot com Target Milestone: --- In this program: ``` #include <iostream> struct A { int x = 1; }; struct B { int x = 0; }; union U { A a; B b; }; int main() { U u{}; std::cout << u.a.x; } ``` GCC prints `0`: https://gcc.godbolt.org/z/8Tj4Y1Pv1 But the correct result is `1`, which is the default initializer of the first union member `a` (see Clang 's result)
next reply other threads:[~2021-08-22 16:11 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-22 16:11 fchelnokov at gmail dot com [this message] 2021-08-23 9:05 ` [Bug c++/102013] " rguenth at gcc dot gnu.org 2021-08-23 23:06 ` pinskia at gcc dot gnu.org
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