From: http://gcc.gnu.org/codingconventions.html Use... ...instead of Rationale "built-in" as an adjective ("built-in function") or "built in" "builtin" "builtin" isn't a word
But the manual uses it: 5.48 Object Size Checking Builtins -- Summary: "Builtins" is used when the code Conventions say don't use it Product: gcc Version: 4.2.0 Status: UNCONFIRMED Keywords: documentation Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38376