Bug #78170 [Opn]: Missing Z_PARAM_OPTIONAL results in a TypeError with incorrect message

Edit report at https://bugs.php.net/bug.php?id=78170&edit=1 ID: 78170 Updated by: nikic@php.net Reported by: jasny@php.net Summary: Missing Z_PARAM_OPTIONAL results in a TypeError with incorrect message Status: Open Type: Bug Package: Scripting Engine problem PHP Version: 7.4Git-2019-06-14 (Git) Block user comment: N Private report: N New Comment: Are you using a debug build? There are assertions that are supposed to catch this: https://github.com/php/php-src/blob/master/Zend/zend_API.h#L1192 Previous Comments: ------------------------------------------------------------------------ [2019-06-14 22:06:29] jasny@php.net Description: ------------ When a function has optional parameters, the use of Z_PARAM_OPTIONAL is required. Forgetting to add this macro leads to a TypeError with a message about the given required argument instead of the missing argument. Test script: --------------- PHP_FUNCTION(test_it) { zend_long code; char *phrase; size_t phrase_len; ZEND_PARSE_PARAMETERS_START_EX(ZEND_PARSE_PARAMS_THROW, 1, 2) Z_PARAM_LONG(code) Z_PARAM_STRING(phrase, phrase_len) ZEND_PARSE_PARAMETERS_END_EX(); //... } <?php test_it(100); ?> Expected result: ---------------- Fatal error: Uncaught TypeError: test_it() expects parameter 2 to be string, null given Actual result: -------------- Fatal error: Uncaught TypeError: test_it() expects parameter 1 to be integer, integer given ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78170&edit=1