Clean up warnings generated by catch

unittests/compiled_tests.cpp

@@ -1,3 +1,27 @@
+// All of these are necessary because of catch.hpp. It's OK, they'll be
+// caught in other cpp files if chaiscript causes them
+
+#ifdef CHAISCRIPT_MSVC
+#pragma warning(push)
+#pragma warning(disable : 4190 4640)
+#endif
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wshadow"
+#endif
+
+#ifdef __llvm__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreturn-type-c-linkage"
+#pragma clang diagnostic ignored "-Wold-style-cast"
+#pragma clang diagnostic ignored "-Wexit-time-destructors"
+#pragma clang diagnostic ignored "-Wfloat-equal"
+#pragma clang diagnostic ignored "-Wunreachable-code"
+#endif
+
+
+
 #define CATCH_CONFIG_MAIN
 
 #include <chaiscript/utility/utility.hpp>