https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118440
Bug ID: 118440 Summary: Wrong zero initialization with tuple usage Product: gcc Version: 15.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: disservin.social at gmail dot com Target Milestone: --- Created attachment 60126 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60126&action=edit reproduction The following code zero initializes the members of the structure S which should instead be in an uninitialized state, since a user defined constructor is defined. clang does no such initialization. https://godbolt.org/z/zzxq6xnWx, compiled with: -O3 -Wall -Wextra Please let me know if there's maybe something I am missing here?