Suppress clang warnings in test-suite

Suppresses -Wfinal-dtor-non-final-class and -Wnon-c-typedef-for-linkage
observed with clang 17.

Examples/test-suite/cpp11_final_directors.i

@@ -9,6 +9,13 @@
 %warnfilter(SWIGWARN_LANG_DIRECTOR_FINAL) BaseFinalDestructor::~BaseFinalDestructor;
 %warnfilter(SWIGWARN_LANG_DIRECTOR_FINAL) BaseFinalDestructor2::~BaseFinalDestructor2;
 
+%{
+#if defined(__clang__)
+// Suppress: class with destructor marked 'final' cannot be inherited from [-Wfinal-dtor-non-final-class]
+#pragma clang diagnostic ignored "-Wfinal-dtor-non-final-class"
+#endif
+%}
+
 %inline %{
 struct Base {
   virtual void basemeth() final {}

Examples/test-suite/cpp11_final_override.i

@@ -6,6 +6,13 @@
 %warnfilter(SWIGWARN_PARSE_KEYWORD) final; // 'final' is a java keyword, renaming to '_final'
 %warnfilter(SWIGWARN_PARSE_KEYWORD) override; // 'override' is a C# keyword, renaming to '_override'
 
+%{
+#if defined(__clang__)
+// Suppress: class with destructor marked 'final' cannot be inherited from [-Wfinal-dtor-non-final-class]
+#pragma clang diagnostic ignored "-Wfinal-dtor-non-final-class"
+#endif
+%}
+
 // throw is invalid in C++17 and later, only SWIG to use it
 #define TESTCASE_THROW1(T1) throw(T1)
 %{

Examples/test-suite/nested_class.i

@@ -55,6 +55,11 @@
 #pragma GCC diagnostic ignored "-Wpedantic"
 #endif
 
+#if defined(__clang__)
+// Suppress: anonymous non-C-compatible type given name for linkage purposes by typedef declaration; add a tag name here [-Wnon-c-typedef-for-linkage]
+#pragma clang diagnostic ignored "-Wnon-c-typedef-for-linkage"
+#endif
+
 namespace bar {
     int foo() { return 0; }
 }