Fixed bug #27042 (SPL: SeekableIterator seek() broken).

NEWS

@@ -11,6 +11,7 @@ PHP                                                                        NEWS
   (Derick)
 - Fixed problems with longlong values in mysqli. (Georg)
 - Fixed class name case preserving of user defined classes. (Marcus)
+- Fixed bug #27042 (SPL: SeekableIterator seek() broken). (Marcus)
 - Fixed bug #27008 (Every class method can be called as static). (Marcus)
 - Fixed bug #26938 (exec() has problems reading long lines).
   (Ilia, runekl[at]opoint[dot]com

ext/spl/spl_iterators.c

@@ -880,6 +880,9 @@ static INLINE void spl_limit_it_seek(spl_dual_it_object *intern, long pos TSRMLS
 		INIT_PZVAL(&zpos);
 		ZVAL_LONG(&zpos, pos);
 		zend_call_method_with_1_params(&intern->inner.zobject, intern->inner.ce, NULL, "seek", NULL, &zpos);
+		spl_dual_it_free(intern TSRMLS_CC);
+		zend_user_it_free_current(intern->inner.iterator TSRMLS_CC);
+		spl_dual_it_fetch(intern, 1 TSRMLS_CC);
 		intern->current.pos = pos;
 	} else {
 		/* emulate the forward seek, by next() calls */

ext/spl/tests/limititerator.phpt

@@ -0,0 +1,173 @@
+--TEST--
+SPL: SeekableIterator
+--SKIPIF--
+<?php if (!extension_loaded("spl")) print "skip"; ?>
+--FILE--
+<?php
+
+class NumericArrayIterator implements Iterator
+{
+	protected $a;
+	protected $i;
+
+	public function __construct($a)
+	{
+		echo __METHOD__ . "\n";
+		$this->a = $a;
+	}
+
+	public function rewind()
+	{
+		echo __METHOD__ . "\n";
+		$this->i = 0;
+	}
+
+	public function hasMore()
+	{
+		echo __METHOD__ . "\n";
+		return $this->i < count($this->a);
+	}
+
+	public function key()
+	{
+		echo __METHOD__ . "\n";
+		return $this->i;
+	}
+
+	public function current()
+	{
+		echo __METHOD__ . "\n";
+		return $this->a[$this->i];
+	}
+
+	public function next()
+	{
+		echo __METHOD__ . "\n";
+		$this->i++;
+	}
+}
+
+class SeekableNumericArrayIterator extends NumericArrayIterator implements SeekableIterator
+{
+	public function seek($index)
+	{
+		if ($index < count($this->a)) {
+			$this->i = $index;
+		}
+		echo __METHOD__ . '(' . $index . ")\n";
+	}
+}
+
+$a = array(1, 2, 3, 4, 5);
+foreach (new LimitIterator(new NumericArrayIterator($a)) as $v)
+{
+	print "$v\n";
+}
+
+echo "===SEEKABLE===\n";
+$a = array(1, 2, 3, 4, 5);
+foreach(new LimitIterator(new SeekableNumericArrayIterator($a)) as $v)
+{
+	print "$v\n";
+}
+
+echo "===SEEKING===\n";
+$a = array(1, 2, 3, 4, 5);
+$l = new LimitIterator(new SeekableNumericArrayIterator($a));
+for($i = 0; $i < 5; $i++)
+{
+	$l->seek($i);
+	print $l->current() . "\n";
+}
+
+?>
+===DONE===
+<?php exit(0); ?>
+--EXPECT--
+NumericArrayIterator::__construct
+NumericArrayIterator::rewind
+NumericArrayIterator::hasMore
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+1
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+2
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+3
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+4
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+5
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+===SEEKABLE===
+NumericArrayIterator::__construct
+NumericArrayIterator::rewind
+SeekableNumericArrayIterator::seek(0)
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+1
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+2
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+3
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+4
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+5
+NumericArrayIterator::next
+NumericArrayIterator::hasMore
+===SEEKING===
+NumericArrayIterator::__construct
+SeekableNumericArrayIterator::seek(0)
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+1
+SeekableNumericArrayIterator::seek(1)
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+2
+SeekableNumericArrayIterator::seek(2)
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+3
+SeekableNumericArrayIterator::seek(3)
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+4
+SeekableNumericArrayIterator::seek(4)
+NumericArrayIterator::hasMore
+NumericArrayIterator::current
+NumericArrayIterator::key
+5
+===DONE===