@@ -0,0 +1,15 @@
+#include <stddef.h>
+
+#ifdef PLATFORM_IS_VISUAL_STUDIO
+#  define EXPORT_SYMBOL __declspec(dllexport)
+#else
+#  define EXPORT_SYMBOL
+#endif
+
+typedef void (*baretest_callback_fn)(size_t value);
+
+EXPORT_SYMBOL extern void baretest_callback(baretest_callback_fn cb, size_t value)
+{
+  cb(value);
+}
+
If we don't support Windows, this wouldn't be needed.