Issue #22080 has been reported by Earlopain (Earlopain _). ---------------------------------------- Bug #22080: `Integer(obj, exception: false)` raises when `to_str` doesn't return String https://bugs.ruby-lang.org/issues/22080 * Author: Earlopain (Earlopain _) * Status: Open * ruby -v: ruby 4.1.0dev (2026-05-23T13:04:55Z master 6c6df00bbc) +PRISM [x86_64-linux] * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ```rb obj = Object.new def obj.to_str = 1 Integer(obj, exception: false) # can't convert Object to String (Object#to_str gives Integer) (TypeError) ``` But returning the wrong type from `to_int` is fine: ```rb obj = Object.new def obj.to_int = "1" Integer(obj, exception: false) # nil ``` Doc says this (https://docs.ruby-lang.org/en/master/Kernel.html#method-i-Integer):

With exception given as false, an exception of any kind is suppressed and nil is returned.

So it looks like it should not raise in both cases. Or more specifically, try `to_i` next, since that is what happens when `to_int` returns the wrong type. -- https://bugs.ruby-lang.org/