Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  BFN
  Fixed Bug #67724

ext/zlib/tests/bug67724.phpt

@@ -0,0 +1,26 @@
+--TEST--
+Bug #67724 (chained zlib filters silently fail with large amounts of data)
+--SKIPIF--
+<?php
+extension_loaded("zlib") or die("skip need ext/zlib");
+?>
+--FILE--
+<?php
+echo "Test\n";
+
+$f = fopen(__DIR__."/bug67724.gz.gz", "rb")
+	or die(current(error_get_last()));
+stream_filter_append($f, "zlib.inflate", STREAM_FILTER_READ, ["window" => 30]);
+stream_filter_append($f, "zlib.inflate", STREAM_FILTER_READ, ["window" => 30]);
+for ($i = 0; !feof($f); $i += strlen(fread($f, 0x1000)))
+	;
+fclose($f);
+
+var_dump($i);
+
+?>
+DONE
+--EXPECT--
+Test
+int(25600000)
+DONE

ext/zlib/zlib_filter.c

@@ -302,7 +302,8 @@ static php_stream_filter *php_zlib_filter_create(const char *filtername, zval *f
 
 	data->strm.zalloc = (alloc_func) php_zlib_alloc;
 	data->strm.zfree = (free_func) php_zlib_free;
-	data->strm.avail_out = data->outbuf_len = data->inbuf_len = 2048;
+	data->strm.avail_out = data->outbuf_len = 0x8000;
+	data->inbuf_len = 2048;
 	data->strm.next_in = data->inbuf = (Bytef *) pemalloc(data->inbuf_len, persistent);
 	if (!data->inbuf) {
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed allocating %zd bytes", data->inbuf_len);