void ctu_apply_attribs(tree_t *sema, tree_t *decl, const vector_t *attribs)
void(* ctu_attrib_apply_t)(tree_t *sema, tree_t *decl, const vector_t *args)
void ctu_init_attribs(tree_t *sema, arena_t *arena)
ctu_attrib_apply_t fn_apply
a generic vector of pointers