Suppress pedantic warnings in testcases

Examples/test-suite/enum_forward.i

@@ -8,6 +8,11 @@ enum ForwardEnum2 { CCC, DDD };
 %}
 
 %inline %{
+#if defined(__GNUC__)
+/* ISO C forbids forward references to ‘enum’ types [-Werror=pedantic] */
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+
 #if !defined(__SUNPRO_C)
 enum ForwardEnum1;
 enum ForwardEnum2;

Examples/test-suite/enum_macro.i

@@ -1,6 +1,13 @@
 %module enum_macro
 
 %inline %{
+
+#if defined(__GNUC__)
+/* comma at end of enumerator list [-Werror=pedantic] */
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+
+
 enum Greeks1
 {
 #define GREEK1 -1

Examples/test-suite/nested_class.i

@@ -49,6 +49,12 @@
 %warnfilter(SWIGWARN_PARSE_NAMED_NESTED_CLASS) Outer2::IgnoreMe;
 
 %inline %{
+
+#if defined(__GNUC__)
+/* ISO C++ prohibits anonymous structs [-Werror=pedantic] */
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+
 struct Outer {
   typedef int Integer;
   ///////////////////////////////////////////