per @mauke comment in GH 23649

The 'exit;' statement is here to ensure that bar does not return
normally. (If it did, the exit would be executed, making the test fail
because the rest of the planned tests wouldn't have run.)

For clarity, I would recommend adding an explicit fail.

Author: jkeenan

t/op/goto.t

@@ -74,6 +74,8 @@ sub bar {
 }
 
 &bar;
+fail('goto bypass');
+exit;
 
 FINALE:
 is(curr_test(), 20, 'FINALE');