80a8b7bd1f
The issue #20681 describe the error of delete() function removing the elements from the origin array/hash/string. This issue affected other delete functions. Because ruby delete and delete_if functions make destructive changes to the origin array/hash. The delete_undef_values removed elements from the origin array/hash and this is not the desired behaviour. To solve this, we should dup or clone the array/hash before using the delete or delete_if ruby functions. We should also check if args[0] is not nil before using dup, since dup on nil raises exception. This fix the problem and add unit tests, so we could enforce this behaviour and prevent regressions. |
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