Obsolete:PHP 4.4.x heap corruption/debug
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Gentoo GNU/Linx ppc32
Test 1
<?php class C { var $m1, $m2, $m3, $m4, $m5, $m6; } ini_set( 'memory_limit', -1 ); $a = array(); for ( $i=0; $i<100000; $i++) $a[] = new C; ?>
Output
23% avar@Rancorwe /tmp/php/php4-STABLE-200601070135 $ sapi/cli/php -n /tmp/tst1.php [Sat Jan 7 02:52:39 2006] Script: '/tmp/tst1.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x102599B0 status: Beginning: Overrun (magic=0x11E7DA58, expected=0x7312F8DC) End: Unknown --------------------------------------- [Sat Jan 7 02:52:39 2006] Script: '/tmp/tst1.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x10259970 status: Beginning: Overrun (magic=0x102599A8, expected=0x7312F8DC) End: Unknown --------------------------------------- [Sat Jan 7 02:52:39 2006] Script: '/tmp/tst1.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x1025FC80 status: Beginning: Overrun (magic=0x10259968, expected=0x7312F8DC) End: Unknown --------------------------------------- [Sat Jan 7 02:52:39 2006] Script: '/tmp/tst1.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x1025FD18 status: Beginning: Overrun (magic=0x1025FC78, expected=0x7312F8DC) End: Unknown --------------------------------------- [Sat Jan 7 02:52:39 2006] Script: '/tmp/tst1.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x1025FDB0 status: Beginning: Overrun (magic=0x1025FD10, expected=0x7312F8DC) End: Unknown --------------------------------------- [Sat Jan 7 02:52:39 2006] Script: '/tmp/tst1.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x1025FE48 status: Beginning: Overrun (magic=0x1025FDA8, expected=0x7312F8DC) End: Unknown ---------------------------------------
Test 2
<?php $t = array( 'm1' => null, 'm2' => null, 'm3' => null, 'm5' => null, 'm6' => null ); ini_set( 'memory_limit', -1 ); $a = array(); for ( $i=0; $i<100000; $i++) $a[] = $t; ?>
Output
23% avar@Rancorwe /tmp/php/php4-STABLE-200601070135 $ sapi/cli/php -n /tmp/tst2.php [Sat Jan 7 02:53:25 2006] Script: '/tmp/tst2.php' --------------------------------------- /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.h(44) : Block 0x1025EF98 status: Beginning: Cached (allocated on /tmp/php/php4-STABLE-200601070135/Zend/zend_execute.c:512, 16 bytes) End: OK ---------------------------------------