assignable
For the universal parser, `rb_reg_named_capture_assign_iter_impl` function is shared between the parser and ripper. However `parser_params` struct is partially different, and `assignable` function depends on that part indirectly.
include?
rb_fix_mul_fix
MUL_OVERFLOW_FIXNUM_P
Fiber::Scheduler#blocking_operation_wait
String#[]
String#slice
rb_ec_check_ints()