Add a test case for bug #25708

ext/standard/tests/array/bug25708.phpt

@@ -0,0 +1,223 @@
+--TEST--
+Bug #25708 (extract($GLOBALS, EXTR_REFS) mangles $GLOBALS)
+--FILE--
+<?php
+function foo($ref, $alt) {
+	unset($GLOBALS['a']);
+	unset($GLOBALS['b']);
+	$GLOBALS['a'] = 1;
+	$GLOBALS['b'] = 2;
+
+	$org_a = $GLOBALS['a'];
+	$org_b = $GLOBALS['b'];
+
+	if ($ref) {
+		global $a, $b;
+	} else {
+		/* zval temp_var(NULL); // refcount = 1
+		 * a = temp_var[x] // refcount = 2
+		 */
+		$a = NULL;
+		$b = NULL;
+	}
+
+	debug_zval_dump($a, $b, $GLOBALS['a'], $GLOBALS['b']);
+	echo "--\n";
+	if ($alt) {
+		$a = &$GLOBALS['a'];
+		$b = &$GLOBALS['b'];
+	} else {
+		extract($GLOBALS, EXTR_REFS);
+	}
+	debug_zval_dump($a, $b, $GLOBALS['a'], $GLOBALS['b']);
+	echo "--\n";
+	$a = &$GLOBALS['a'];
+	$b = &$GLOBALS['b'];
+	debug_zval_dump($a, $b, $GLOBALS['a'], $GLOBALS['b']);
+	echo "--\n";
+	$GLOBALS['b'] = 3;
+	debug_zval_dump($a, $b, $GLOBALS['a'], $GLOBALS['b']);
+	echo "--\n";
+	$a = 4;
+	debug_zval_dump($a, $b, $GLOBALS['a'], $GLOBALS['b']);
+	echo "--\n";
+	$c = $b;
+	debug_zval_dump($b, $GLOBALS['b'], $c);
+	echo "--\n";
+	$b = 'x';
+	debug_zval_dump($a, $b, $GLOBALS['a'], $GLOBALS['b'], $c);
+	echo "--\n";
+	debug_zval_dump($org_a, $org_b);
+	echo "----";
+	if ($ref) echo 'r';
+	if ($alt) echo 'a';
+	echo "\n";
+}
+
+$a = 'ok';
+$b = 'ok';
+$_a = $a;
+$_b = $b;
+
+foo(false, true);
+foo(true, true);
+foo(false, false);
+foo(true, false);
+
+debug_zval_dump($_a, $_b);
+?>
+--EXPECT--
+NULL refcount(2)
+NULL refcount(2)
+long(1) refcount(3)
+long(2) refcount(3)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(3) refcount(1)
+long(1) refcount(1)
+long(3) refcount(1)
+--
+long(4) refcount(1)
+long(3) refcount(1)
+long(4) refcount(1)
+long(3) refcount(1)
+--
+long(3) refcount(1)
+long(3) refcount(1)
+long(3) refcount(2)
+--
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(3) refcount(2)
+--
+long(1) refcount(2)
+long(2) refcount(2)
+----a
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(3) refcount(1)
+long(1) refcount(1)
+long(3) refcount(1)
+--
+long(4) refcount(1)
+long(3) refcount(1)
+long(4) refcount(1)
+long(3) refcount(1)
+--
+long(3) refcount(1)
+long(3) refcount(1)
+long(3) refcount(2)
+--
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(3) refcount(2)
+--
+long(1) refcount(2)
+long(2) refcount(2)
+----ra
+NULL refcount(2)
+NULL refcount(2)
+long(1) refcount(3)
+long(2) refcount(3)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(3) refcount(1)
+long(1) refcount(1)
+long(3) refcount(1)
+--
+long(4) refcount(1)
+long(3) refcount(1)
+long(4) refcount(1)
+long(3) refcount(1)
+--
+long(3) refcount(1)
+long(3) refcount(1)
+long(3) refcount(2)
+--
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(3) refcount(2)
+--
+long(1) refcount(2)
+long(2) refcount(2)
+----
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(2) refcount(1)
+long(1) refcount(1)
+long(2) refcount(1)
+--
+long(1) refcount(1)
+long(3) refcount(1)
+long(1) refcount(1)
+long(3) refcount(1)
+--
+long(4) refcount(1)
+long(3) refcount(1)
+long(4) refcount(1)
+long(3) refcount(1)
+--
+long(3) refcount(1)
+long(3) refcount(1)
+long(3) refcount(2)
+--
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(4) refcount(1)
+string(1) "x" refcount(1)
+long(3) refcount(2)
+--
+long(1) refcount(2)
+long(2) refcount(2)
+----r
+string(2) "ok" refcount(2)
+string(2) "ok" refcount(2)