https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125187
--- Comment #15 from Oliver Schönrock <oschonrock at gmail dot com> --- Created attachment 64380 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64380&action=edit preprocessed gcc15.2.1 1TU (ie fmt-header-only) version - no diagnostic This version compiled with gcc15 and "header only fmt" emits no diagnostic.
