Fix the bug where clone curl does not copy POST fields

Author: matyhtf

ext/curl/interface.c

@@ -1310,6 +1310,7 @@ void _php_setup_easy_copy_handlers(php_curl *ch, php_curl *source)
 #endif
 
 	ZVAL_COPY(&ch->private_data, &source->private_data);
+	ZVAL_COPY(&ch->postfields, &source->postfields);
 
 	efree(ch->to_free);
 	ch->to_free = source->to_free;
@@ -1595,7 +1596,7 @@ PHP_FUNCTION(curl_copy_handle)
 
 	_php_setup_easy_copy_handlers(dupch, ch);
 
-	postfields = &ch->postfields;
+	postfields = &dupch->postfields;
 	if (Z_TYPE_P(postfields) != IS_UNDEF) {
 		if (build_mime_structure_from_hash(dupch, postfields) == FAILURE) {
 			zval_ptr_dtor(return_value);

ext/curl/tests/curl_handle_clone2.phpt

@@ -0,0 +1,46 @@
+--TEST--
+Test that cloning of Curl object post CURLFile multiple times with curl_multi_exec()
+--EXTENSIONS--
+curl
+--FILE--
+<?php
+include 'server.inc';
+$host = curl_cli_server_start();
+
+$ch1 = curl_init();
+curl_setopt($ch1, CURLOPT_SAFE_UPLOAD, 1);
+curl_setopt($ch1, CURLOPT_URL, "{$host}/get.php?test=file");
+// curl_setopt($ch1, CURLOPT_RETURNTRANSFER, 1);
+
+$filename = __DIR__ . '/curl_copy_handle_variation4.txt';
+file_put_contents($filename, "Test.");
+$file = curl_file_create($filename);
+$params = array('file' => $file);
+var_dump(curl_setopt($ch1, CURLOPT_POSTFIELDS, $params));
+
+$ch2 = clone $ch1;
+$ch3 = clone $ch1;
+
+$mh = curl_multi_init();
+curl_multi_add_handle($mh, $ch1);
+curl_multi_add_handle($mh, $ch2);
+do {
+    $status = curl_multi_exec($mh, $active);
+    if ($active) {
+        curl_multi_select($mh);
+    }
+} while ($active && $status == CURLM_OK);
+
+curl_multi_remove_handle($mh, $ch1);
+curl_multi_remove_handle($mh, $ch2);
+curl_multi_remove_handle($mh, $ch3);
+curl_multi_close($mh);
+?>
+===DONE===
+--EXPECT--
+bool(true)
+curl_copy_handle_variation4.txt|application/octet-stream|5curl_copy_handle_variation4.txt|application/octet-stream|5===DONE===
+--CLEAN--
+<?php
+@unlink(__DIR__ . '/curl_copy_handle_variation4.txt');
+?>