Throw ValueError on empty tag in enchant_broker_request_dict()

Author: Girgias

ext/enchant/enchant.c

@@ -455,8 +455,8 @@ PHP_FUNCTION(enchant_broker_request_dict)
 	PHP_ENCHANT_GET_BROKER;
 
 	if (taglen == 0) {
-		php_error_docref(NULL, E_WARNING, "Tag cannot be empty");
-		RETURN_FALSE;
+		zend_argument_value_error(2, "cannot be empty");
+		RETURN_THROWS();
 	}
 
 	pdict = enchant_broker_request_dict(pbroker->pbroker, (const char *)tag);

ext/enchant/tests/broker_request_dict_error_on_empty_tag.phpt

@@ -0,0 +1,20 @@
+--TEST--
+enchant_broker_request_dict() must throw ValueError on empty tag
+--SKIPIF--
+<?php
+if(!extension_loaded('enchant')) die('skip, enchant not loader');
+if (!is_object(enchant_broker_init())) {die("skip, resource dont load\n");}
+?>
+--FILE--
+<?php
+$broker = enchant_broker_init();
+
+try {
+    var_dump(enchant_broker_request_dict($broker, ''));
+} catch (\ValueError $e) {
+    echo $e->getMessage() . \PHP_EOL;
+}
+
+?>
+--EXPECT--
+enchant_broker_request_dict(): Argument #2 ($tag) cannot be empty