https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108993
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> --- And that's clearly the committee's intent: https://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#302 "Zero the object, then call the default generated constructor" ... "Zero first, and generate the object code for the default constructor when it's needed for value-initialization cases" https://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#543 "Change 9.4 [dcl.init] to specify that non-union class objects with no user-declared constructor are value-initialized by first zero-initializing the object and then calling the (implicitly-defined) default constructor,"
