Rescue through Set of errors not working

[brauliobo]

The following code:

RETRIABLE_ERRORS = Set.new([
  ::Mechanize::ResponseCodeError,
  ::Mechanize::ResponseReadError,
])

def call method, url, *args
  mechanize.send method, url, *args                                                                                                                                                                        
rescue *RETRIABLE_ERRORS => e
end

Returns the error TypeError: class or module required for rescue clause on truffleruby but works on MRI

[eregon]

Thanks for the report, simpler repro with no dependencies:

require 'set'

RETRIABLE_ERRORS = Set.new([
  RuntimeError,
  ArgumentError,
])

def call
  raise "oops"
rescue *RETRIABLE_ERRORS => e
  p e
end

call

It works fine if an Array is used instead of the Set.
A Set of exceptions like here seems rather inefficient since it will cause to iterate the set on every exception.

[brauliobo]

thanks eregon, I'll switch to array

[eregon]

I have a fix coming BTW, it's literally changing a true to false to use to_a instead of to_ary for coercion.