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Raised when throw is called with a tag which does not have corresponding catch block.
throw "foo", "bar"
raises the exception:
UncaughtThrowError: uncaught throw "foo"
Document-class: UncaughtThrowError
Raised when throw is called with a tag which does not have corresponding catch block.
throw "foo", "bar"
raises the exception:
UncaughtThrowError: uncaught throw "foo"
 
               static VALUE
uncaught_throw_init(int argc, const VALUE *argv, VALUE exc)
{
    rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);
    rb_call_super(argc - 2, argv + 2);
    rb_ivar_set(exc, id_tag, argv[0]);
    rb_ivar_set(exc, id_value, argv[1]);
    return exc;
}
             
            Return the tag object which was called for.
 
               static VALUE
uncaught_throw_tag(VALUE exc)
{
    return rb_ivar_get(exc, id_tag);
}