Bug #75539 [Com]: Recursive call errors are not reported by preg_last_error()

Edit report at https://bugs.php.net/bug.php?id=75539&edit=1 ID: 75539 Comment by: andrew dot nester dot dev at gmail dot com Reported by: grzegorz129 at gmail dot com Summary: Recursive call errors are not reported by preg_last_error() Status: Open Type: Bug Package: PCRE related Operating System: N/A PHP Version: 7.2.0RC6 Block user comment: N Private report: N New Comment: Thanks for reporting this issue! I've just added PR fixing this Previous Comments: ------------------------------------------------------------------------ [2017-11-20 00:47:53] grzegorz129 at gmail dot com Description: ------------ I found a strange (yet consistent across since 5.6) regarding infinite loop patterns error reporting. preg_match() correctly identifies broken patterns and triggers E_WARN, however preg_last_error() returns PREG_NO_ERROR instead of expected PREG_RECURSION_LIMIT_ERROR. It may be related to https://bugs.php.net/bug.php?id=74183 Test script: --------------- <?php // Test at https://3v4l.org/UkeMa var_dump(preg_match('/((?1)?z)/', '')); var_dump(preg_last_error() === \PREG_NO_ERROR); Expected result: ---------------- - preg_match() returning false - preg_last_error() returning value of PREG_RECURSION_LIMIT_ERROR Actual result: -------------- - preg_match() returns false - preg_last_error() returns value of PREG_NO_ERROR ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75539&edit=1