Added test case for bug #22367

Author: Moriyoshi Koizumi

tests/lang/bug22367.phpt

@@ -0,0 +1,118 @@
+--TEST--
+Bug #22367 (weird zval allocation problem)
+--FILE--
+<?php
+class foo
+{
+	var $test = array(0, 1, 2, 3, 4); 
+
+	function a($arg) {
+		var_dump(array_key_exists($arg, $this->test));
+		return $this->test[$arg];
+	}
+
+	function b() {
+		@$this->c();
+
+		$zero = $this->test[0];
+		$one = $this->test[1];
+		$two = $this->test[2];
+		$three = $this->test[3];
+		$four = $this->test[4];
+		return array($zero, $one, $two, $three, $four);
+	}
+
+	function c() {
+		return $this->a($this->d());
+	}
+
+	function d() {}
+}
+
+class bar extends foo
+{
+	var $i = 0;
+	var $idx;
+
+	function bar($idx) {
+		$this->idx = $idx;
+	}
+
+	function &a($arg){
+		return parent::a($arg);
+	}
+	function d(){
+		return $this->idx;
+	}
+}
+
+$a = new bar(5);
+var_dump($a->idx);
+@$a->c();
+$b = $a->b();
+var_dump($b);
+var_dump($a->test);
+
+$a = new bar(2);
+var_dump($a->idx);
+@$a->c();
+$b = $a->b();
+var_dump($b);
+var_dump($a->test);
+
+?>
+--EXPECT--
+int(5)
+bool(false)
+bool(false)
+array(5) {
+  [0]=>
+  int(0)
+  [1]=>
+  int(1)
+  [2]=>
+  int(2)
+  [3]=>
+  int(3)
+  [4]=>
+  int(4)
+}
+array(5) {
+  [0]=>
+  int(0)
+  [1]=>
+  int(1)
+  [2]=>
+  int(2)
+  [3]=>
+  int(3)
+  [4]=>
+  int(4)
+}
+int(2)
+bool(true)
+bool(true)
+array(5) {
+  [0]=>
+  int(0)
+  [1]=>
+  int(1)
+  [2]=>
+  int(2)
+  [3]=>
+  int(3)
+  [4]=>
+  int(4)
+}
+array(5) {
+  [0]=>
+  int(0)
+  [1]=>
+  int(1)
+  [2]=>
+  int(2)
+  [3]=>
+  int(3)
+  [4]=>
+  int(4)
+}