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not guaranteed to be signed, so comparison with -1 will cause a warning (turned error) for some of our ports (e.g. our arm ports). Fix this by making the 'ch' variable an int instead of a char.
not guaranteed to be signed, so comparison with -1 will cause a warning (turned error) for some of our ports (e.g. our arm ports). Fix this by making the 'ch' variable an int instead of a char.