Test more edge cases for insertData

Author: nielsdos

ext/dom/tests/modern/spec/CharacterData_insertData_edge_cases.phpt

@@ -2,6 +2,8 @@
 insertData() edge cases
 --EXTENSIONS--
 dom
+--SKIPIF--
+<?php if (PHP_INT_SIZE != 8) die("skip this test is for 64-bit only"); ?>
 --FILE--
 <?php
 
@@ -12,9 +14,15 @@ try {
 } catch (DOMException $e) {
     echo $e->getMessage(), "\n";
 }
+try {
+    var_dump($comment->insertData(2**31+1, "data"));
+} catch (DOMException $e) {
+    echo $e->getMessage(), "\n";
+}
 echo $dom->saveHTML($comment), "\n";
 
 ?>
 --EXPECT--
 Index Size Error
+Index Size Error
 <!--foobarbaz-->