ext/json/ext/parser/parser.rl in json_pure-1.6.6 vs ext/json/ext/parser/parser.rl in json_pure-1.6.7

@@ -703,9 +703,10 @@
     source = rb_convert_type(source, T_STRING, "String", "to_str");
     if (!json->quirks_mode) {
       source = convert_encoding(StringValue(source));
     }
     json->current_nesting = 0;
+    StringValue(source);
     json->len = RSTRING_LEN(source);
     json->source = RSTRING_PTR(source);;
     json->Vsource = source;
     return self;
 }