Method not available on this version
This method is only available on newer versions.
The first available version (v2_6_3) is shown here.
eval_script()
public
Compiled source code (String) on *eval methods
on the :script_compiled event. If loaded from a file, it will
return nil.
static VALUE
tracepoint_attr_eval_script(VALUE tpval)
{
return rb_tracearg_eval_script(get_trace_arg());
}