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+--TEST--
+Bug #51552 (debug_backtrace() causes segmentation fault and/or memory issues)
+--FILE--
+<?php
+function walk($element, $key, $p) {
+ $backtrace = debug_backtrace();
+ echo "$element\n";
+}
+
+$a = array(1,2,3,4,5,6,7,8,9,10);
+array_walk($a, 'walk', 'testthis');
+?>
+--EXPECT--
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10