[php-src] PR #23555: fix(frenchtojd): range-check zend_long args before narrowing to int

Pull Request: https://github.com/php/php-src/pull/23555 Author: lacatoire ## Summary FrenchToSdn() in ext/calendar/french.c takes C int parameters. PHP_FUNCTION(frenchtojd) parses into zend_long but passes them directly to FrenchToSdn(), causing implicit narrowing. Values whose low 32 bits alias into the valid range (e.g. month = 1 + 2**32) bypass the guard in french.c and return a valid-looking Julian Day instead of 0. ### Fix Add an explicit range check against the zend_long variables in PHP_FUNCTION(frenchtojd), before the call to FrenchToSdn(), mirroring the guard that already exists inside the helper: ```c if (year < 1 || year > 14 || month < 1 || month > 13 || day < 1 || day > 30) { RETURN_LONG(0); } RETURN_LONG(FrenchToSdn(year, month, day)); ``` Valid inputs and already-out-of-range values (no aliasing) are unaffected. ### Test added ext/calendar/tests/frenchtojd_overflow.phpt covers the three aliased-overflow cases (month, day, year each + 2**32) and confirms a valid call still returns the correct Julian Day.