<?phpfunctionvarToString($var) {try {}catch (Exception$e) {}$vars = [$var1,$var2,$var3];foreach ($varsas$i =>$v1) {foreach ($varsas$j =>$v2) {if ($i <$j) {try {}catch (Exception$e) {$result["serialize_{$i}"] ="Error:" .$e->getMessage();$result["serialize_{$j}"] ="Error:" .$e->getMessage();}try {$result["unserialize_{$i}"] =unserialize(serialize($v1));$result["unserialize_{$j}"] =unserialize(serialize($v2));}catch (Exception$e) {$result["unserialize_{$i}"] ="Error:" .$e->getMessage();$result["unserialize_{$j}"] ="Error:" .$e->getMessage();$result["base64_encode_{$i}"] =base64_encode(varToString($v1));$result["base64_encode_{$j}"] =base64_encode(varToString($v2));}catch (Exception$e) {$result["base64_encode_{$i}"] ="Error:" .$e->getMessage();$result["base64_encode_{$j}"] ="Error:" .$e->getMessage();}try {$result["base64_decode_{$i}"] =base64_decode(base64_encode(varToString($v1)));$result["base64_decode_{$j}"] =base64_decode(base64_encode(varToString($v2)));}catch (Exception$e) {$result["base64_decode_{$i}"] ="Error:" .$e->getMessage();$result["base64_decode_{$j}"] ="Error:" .$e->getMessage();$result["md5_{$i}"] =md5(varToString($v1));$result["md5_{$j}"] =md5(varToString($v2));}catch (Exception$e) {$result["md5_{$i}"] ="Error:" .$e->getMessage();$result["md5_{$j}"] ="Error:" .$e->getMessage();}try {$result["sha1_{$i}"] =sha1(varToString($v1));$result["sha1_{$j}"] =sha1(varToString($v2));}catch (Exception$e) {$result["sha1_{$i}"] ="Error:" .$e->getMessage();$result["sha1_{$j}"] ="Error:" .$e->getMessage();$result["url_encode_{$i}"] =urlencode(varToString($v1));$result["url_encode_{$j}"] =urlencode(varToString($v2));}catch (Exception$e) {$result["url_encode_{$i}"] ="Error:" .$e->getMessage();$result["url_encode_{$j}"] ="Error:" .$e->getMessage();}try {$result["url_decode_{$i}"] =urldecode(urlencode(varToString($v1)));$result["url_decode_{$j}"] =urldecode(urlencode(varToString($v2)));}catch (Exception$e) {$result["url_decode_{$i}"] ="Error:" .$e->getMessage();$result["url_decode_{$j}"] ="Error:" .$e->getMessage();$result["html_encode_{$i}"] =htmlspecialchars(varToString($v1));$result["html_encode_{$j}"] =htmlspecialchars(varToString($v2));}catch (Exception$e) {$result["html_encode_{$i}"] ="Error:" .$e->getMessage();$result["html_encode_{$j}"] ="Error:" .$e->getMessage();}try {$result["html_decode_{$i}"] =htmlspecialchars_decode(htmlspecialchars(varToString($v1)));$result["html_decode_{$j}"] =htmlspecialchars_decode(htmlspecialchars(varToString($v2)));}catch (Exception$e) {$result["html_decode_{$i}"] ="Error:" .$e->getMessage();$result["html_decode_{$j}"] ="Error:" .$e->getMessage();$result["strlen_{$i}"] =strlen(varToString($v1));$result["strlen_{$j}"] =strlen(varToString($v2));}catch (Exception$e) {$result["strlen_{$i}"] ="Error:" .$e->getMessage();$result["strlen_{$j}"] ="Error:" .$e->getMessage();}try {$result["trim_{$i}"] =trim(varToString($v1));$result["trim_{$j}"] =trim(varToString($v2));}catch (Exception$e) {$result["trim_{$i}"] ="Error:" .$e->getMessage();$result["trim_{$j}"] ="Error:" .$e->getMessage();$result["strtoupper_{$i}"] =strtoupper(varToString($v1));$result["strtoupper_{$j}"] =strtoupper(varToString($v2));}catch (Exception$e) {$result["strtoupper_{$i}"] ="Error:" .$e->getMessage();$result["strtoupper_{$j}"] ="Error:" .$e->getMessage();}try {$result["strtolower_{$i}"] =strtolower(varToString($v1));$result["strtolower_{$j}"] =strtolower(varToString($v2));}catch (Exception$e) {$result["strtolower_{$i}"] ="Error:" .$e->getMessage();$result["strtolower_{$j}"] ="Error:" .$e->getMessage();$result["strrev_{$i}"] =strrev(varToString($v1));}catch (Exception$e) {$result["abs_{$i}"] ="Error:" .$e->getMessage();$result["abs_{$j}"] ="Error:" .$e->getMessage();$result["rand_{$i}_{$j}"] =rand(min($i,$j),max($i,$j));}catch (Exception$e) {$result["rand_{$i}_{$j}"] ="Error:" .$e->getMessage();}try {if (is_callable($v2)) {$result["function_call_{$j}"] =$v2();}}catch (Exception$e) {$result["function_call_{$j}"] ="Error:" .$e->getMessage();$safe_v1 =var_export(varToString($v1),true);$safe_v2 =var_export(varToString($v2),true);$code ='$result["eval_' .$i .'_' .$j .'"] =' .$safe_v1 .' . " " .' .$safe_v2 .';';eval($code);}catch (Exception$e) {$result["eval_error_{$i}_{$j}"] ="Error:" .$e->getMessage();}}}}return$result;}$b =newSplObjectStorage();for ($i =10000;$i >0;$i--) {$object =newStdClass();$a[] =$object;$b->attach($object);}$fiber =newFiber(function ():void {while (true) {}});

/php-src/ext/spl/spl_observer.c:121:26: runtime error: member access within null pointer of type 'spl_SplObjectStorageElement' (aka 'struct _spl_SplObjectStorageElement')SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /php-src/ext/spl/spl_observer.c:121:26 in

php -d "memory_limit=2M" ./test.php