https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109155
Bug ID: 109155 Summary: A note is diagnosed, without any warning or error Product: gcc Version: 12.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: bruno at clisp dot org Target Milestone: --- Created attachment 54682 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54682&action=edit test case In this test case, the compiler emits a 'note', without any 'warning' or 'error'. $ gcc -Wall -S i.c i.c: In function ‘main’: i.c:2:35: note: ‘s’ declared here 2 | struct s { _Bool s: 1; _Bool t; } s; | ^ Which leaves me, as the user, completely baffled. This is new in version 12. In versions 11 and older, no diagnostic is emitted.