Missing warning for stats(), etc. when invoked with empty string

Hi, stats() and friends invoked with empty string or null as argument, return false (indicating failure), but do not emit the Warning that is expected on failure. See: https://3v4l.org/jXC2N <https://3v4l.org/jXC2N> That discrepancy between the two ways of indicating failure is problematic. Indeed, whenever I use one of those functions without prefixing it by @, I expect that it will either return a value of expected type (array in case of stats()), or run the panic procedure of my error handler. I propose to ensure that those functions always emit a Warning in each and every situation they return false/null (provided, of course, that those functions are not supposed to return false/null in absence of failure, and that their purpose is not to check failure condition as in file_exists()). —Claude