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1 parent d8862f9 commit 2c540abCopy full SHA for 2c540ab
Zend/tests/gh18519.phpt
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+--TEST--
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+GH-18519: Nested object comparison leading to stack overflow
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+--FILE--
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+<?php
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+
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+class Node {
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+ public $next;
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+ // forcing dynamic property creation is key
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+}
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+$first = new Node();
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+$first->previous = $first;
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+$first->next = $first;
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+$cur = $first;
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+for ($i = 0; $i < 50000; $i++) {
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+ $new = new Node();
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+ $new->previous = $cur;
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+ $cur->next = $new;
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+ $new->next = $first;
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+ $first->previous = $new;
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+ $cur = $new;
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+try {
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+ // Force comparison manually to trigger zend_hash_compare
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+ $first == $cur;
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+} catch(Error $e) {
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+ echo $e->getMessage(). PHP_EOL;
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+?>
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+--EXPECT--
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+Object compare - stack limit reached
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