1--TEST-- 2Pattern exhausting PCRE JIT stack 3--FILE-- 4<?php 5 6$re = '{^(\\s*\\{\\s*(?:"(?:[^\\0-\\x09\\x0a-\\x1f\\\\"]+|\\\\["bfnrt/\\\\]|\\\\u[a-fA-F0-9]{4})*"\\s*:\\s*(?:[0-9.]+|null|true|false|"(?:[^\\0-\\x09\\x0a-\\x1f\\\\"]+|\\\\["bfnrt/\\\\]|\\\\u[a-fA-F0-9]{4})*"|\\[(?:[^\\]]*|\\[(?:[^\\]]*|\\[(?:[^\\]]*|\\[(?:[^\\]]*|\\[[^\\]]*\\])*\\])*\\])*\\]|(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{[^{}]*\\})*\\})*\\})*\\})*)*\\]|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{[^{}]*\\})*\\})*\\})*\\})*\\})\\s*,\\s*)*?)("require"\\s*:\\s*)((?:[0-9.]+|null|true|false|"(?:[^\\0-\\x09\\x0a-\\x1f\\\\"]+|\\\\["bfnrt/\\\\]|\\\\u[a-fA-F0-9]{4})*"|\\[(?:[^\\]]*|\\[(?:[^\\]]*|\\[(?:[^\\]]*|\\[(?:[^\\]]*|\\[[^\\]]*\\])*\\])*\\])*\\]|(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{[^{}]*\\})*\\})*\\})*\\})*)*\\]|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{(?:[^{}]*|\\{[^{}]*\\})*\\})*\\})*\\})*\\}))(.*)}s'; 7 8$str = '{ 9 "config": { 10 "cache-files-ttl": 0, 11 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"doctrine\\/common": "v2.6.1", 846 "doctrine\\/dbal": "v2.5.4", 847 "doctrine\\/inflector": "v1.1.0", 848 "doctrine\\/lexer": "v1.0.1", 849 "fabpot\\/goutte": "v3.1.2", 850 "graham-campbell\\/manager": "v2.3.1", 851 "guzzle\\/guzzle": "v3.9.3", 852 "guzzlehttp\\/guzzle": "6.1.1", 853 "guzzlehttp\\/promises": "1.1.0", 854 "guzzlehttp\\/psr7": "1.2.3", 855 "intercom\\/intercom-php": "v1.4.0", 856 "intervention\\/image": "2.3.6", 857 "jakub-onderka\\/php-console-color": "0.1", 858 "jakub-onderka\\/php-console-highlighter": "v0.3.2", 859 "jeremeamia\\/SuperClosure": "2.2.0", 860 "jlapp\\/swaggervel": "dev-master", 861 "laravel\\/framework": "v5.1.31", 862 "laravelcollective\\/html": "v5.1.9", 863 "league\\/flysystem": "1.0.18", 864 "league\\/flysystem-aws-s3-v3": "1.0.9", 865 "league\\/fractal": "0.13.0", 866 "league\\/glide": "1.0.0", 867 "league\\/oauth2-client": "0.12.1", 868 "mindscape\\/raygun4php": "dev-master", 869 "monolog\\/monolog": "1.18.0", 870 "mtdowling\\/cron-expression": "v1.1.0", 871 "mtdowling\\/jmespath.php": "2.3.0", 872 "namshi\\/jose": "5.0.2", 873 "nesbot\\/carbon": "1.21.0", 874 "nikic\\/php-parser": "v2.0.1", 875 "orangehill\\/iseed": "dev-master", 876 "paragonie\\/random_compat": "v1.2.1", 877 "phpseclib\\/phpseclib": "0.3.10", 878 "predis\\/predis": "v1.0.3", 879 "psr\\/http-message": "1.0", 880 "psy\\/psysh": "v0.7.1", 881 "swiftmailer\\/swiftmailer": "v5.4.1", 882 "symfony\\/browser-kit": "v2.8.3", 883 "symfony\\/console": "v2.7.10", 884 "symfony\\/css-selector": "v2.7.10", 885 "symfony\\/debug": "v2.7.10", 886 "symfony\\/dom-crawler": "v2.7.10", 887 "symfony\\/event-dispatcher": "v2.8.3", 888 "symfony\\/finder": "v2.7.10", 889 "symfony\\/http-foundation": "v2.7.10", 890 "symfony\\/http-kernel": "v2.7.10", 891 "symfony\\/polyfill-php56": "v1.1.0", 892 "symfony\\/polyfill-util": "v1.1.0", 893 "symfony\\/process": "v2.7.10", 894 "symfony\\/routing": "v2.7.10", 895 "symfony\\/translation": "v2.7.10", 896 "symfony\\/var-dumper": "v2.7.10", 897 "twilio\\/sdk": "4.10.0", 898 "tymon\\/jwt-auth": "0.5.9", 899 "vinkla\\/algolia": "2.2.1", 900 "vlucas\\/phpdotenv": "v1.1.1", 901 "zircote\\/swagger-php": "2.0.6", 902 "heroku-sys\\/apache": "^2.4.10", 903 "heroku-sys\\/nginx": "~1.8.0" 904 } 905}'; 906 907$count = preg_match($re, $str, $matches); 908 909if($count === false) { 910 switch (preg_last_error()) { 911 case PREG_NO_ERROR: 912 throw new \RuntimeException('Failed to execute regex: PREG_NO_ERROR', PREG_NO_ERROR); 913 case PREG_INTERNAL_ERROR: 914 throw new \RuntimeException('Failed to execute regex: PREG_INTERNAL_ERROR', PREG_INTERNAL_ERROR); 915 case PREG_BACKTRACK_LIMIT_ERROR: 916 throw new \RuntimeException('Failed to execute regex: PREG_BACKTRACK_LIMIT_ERROR', PREG_BACKTRACK_LIMIT_ERROR); 917 case PREG_RECURSION_LIMIT_ERROR: 918 throw new \RuntimeException('Failed to execute regex: PREG_RECURSION_LIMIT_ERROR', PREG_RECURSION_LIMIT_ERROR); 919 case PREG_BAD_UTF8_ERROR: 920 throw new \RuntimeException('Failed to execute regex: PREG_BAD_UTF8_ERROR', PREG_BAD_UTF8_ERROR); 921 case PREG_BAD_UTF8_OFFSET_ERROR: 922 throw new \RuntimeException('Failed to execute regex: PREG_BAD_UTF8_OFFSET_ERROR', PREG_BAD_UTF8_OFFSET_ERROR); 923 case PREG_JIT_STACKLIMIT_ERROR: 924 throw new \RuntimeException('Failed to execute regex: PREG_JIT_STACKLIMIT_ERROR', PREG_JIT_STACKLIMIT_ERROR); 925 default: 926 throw new \RuntimeException('Failed to execute regex: Unknown error'); 927 } 928} else { 929 var_dump("Done, $count matches."); 930} 931?> 932==DONE== 933--EXPECT-- 934string(16) "Done, 1 matches." 935==DONE== 936
