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It is trivially easy to write a codon program which runs in both Codon and Python but behaves differently in a way that is not considered a bug in either langua

It is trivially easy to write a codon program which runs in both Codon and Python but behaves differently in a way that is not considered a bug in either language. That means it is not a subset, unless by that you mean that each language has a subset of the other's programs which it can run. In which case C and JavaScript are the same language too.

netr0ute 3y ago
Is there an example of this? I know there's several areas where Cpython has some funky undefined behavior, but those aren't particularly notable because they're by definition implemention dependent.
- selcuka 3y ago
  Isn't fixed width integers as compared to arbitrary width an example of this?
- cozzyd 3y ago
  print(repr(2**64))
- debatem1 3y ago
  The 2**64 example given here is exactly right. You don't need undefined behavior or language lawyering to hit the difference; you just need a 65 element bitset.