#24772 [NEW]: Applying isset() to a dereferenced string causes leak

From: moriyoshi@php.net Operating system: irrelevant PHP version: 4CVS-2003-07-23 (stable) PHP Bug Type: Scripting Engine problem Bug description: Applying isset() to a dereferenced string causes leak Description: ------------ Applying isset() to a dereference element of the string causes a very small leak. Reproduce code: --------------- <?php $a = "string"; var_dump(isset($a{0})); ?> Expected result: ---------------- bool(true) Actual result: -------------- /home/koizumi/src/php-src-4/Zend/zend_execute.c(2399) : Freeing 0x0837545C (2 bytes), script=/tmp/test.php 2397: zval *str = T->EA.data.str_offset.str; 2398: char c = str->value.str.val[T->EA.data.str_offset.offset]; 2399: T->tmp_var.value.str.val = estrndup(&c, 1); 2400: T->tmp_var.value.str.len = 1; 2401: isset = 1; 2402: } -- Edit bug report at http://bugs.php.net/?id=24772&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=24772&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=24772&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=24772&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=24772&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=24772&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=24772&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=24772&r=support Expected behavior: http://bugs.php.net/fix.php?id=24772&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=24772&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=24772&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=24772&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=24772&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=24772&r=dst IIS Stability: http://bugs.php.net/fix.php?id=24772&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=24772&r=gnused