On Mon, 06 Mar 2017 12:51:12 -0800, TimTom wrote: > If you pass an undefined value into starts-with, it loops forever > because the Cool class has a wrapper method that casts the parameters > to Str then invokes that. The Str class, however, defines the method > as only taking a defined string. So it matches the Cool method again. > Repeat. > > > Changing the cool variant to only take a defined value causes it to > die with an error message which is infinitely better: multi method > starts-with(Cool:D: Str(Cool:D) $needle). Or you could make a Str > variant that returns some stock value. I don't really know nor care > what the intended behavior is as long as it doesn't loop infinitely. > From what I've seen in languages I have installed, the majority give > an exception or otherwise crash and perl5 obviously treats it as the > empty string. > > > I presume there's a whole category of these in the Cool class that > need the same treatment (like ends-with and contains).
Thank you for the report. This is now fixed. Fix: https://github.com/rakudo/rakudo/commit/bfbe4298a7 Tests: https://github.com/perl6/roast/commit/0a39902ba1
