https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100596
Bug ID: 100596 Summary: [12 Regression] error: attribute appertains to a friend declaration that is not a definition since r12-786-g149061188c7c6ddf Product: gcc Version: 12.0 Status: UNCONFIRMED Keywords: rejects-valid Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: jason at gcc dot gnu.org, mpolacek at gcc dot gnu.org Target Milestone: --- Affects multiple packages: $ cat json.ii struct final { friend __attribute__((visibility)) bool; }; $ g++ json.ii -c json.ii:2:3: error: attribute appertains to a friend declaration that is not a definition 2 | friend __attribute__((visibility)) bool; | ^~~~~~