initial commit

oscar64/autotest/ambiguousoverload.c

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+#include "ambiguousoverload.h"
+
+/**
+ * Regression test for function pointers in aggregate initialisers.
+ *
+ * This setup function must be in a different translation unit from clearView's definition and
+ * direct call (ambiguousoverload_trigger.c). The bug reused clearView's function declaration as an
+ * aggregate-initialiser list node and corrupted its overload chain. Parsing the definition in the
+ * other translation unit then made the otherwise unambiguous direct call fail.
+ *
+ * Holder reproduces the original ambiguous-overload diagnostic. The single-member CallbackHolder
+ * also covers the related initialiser-builder assertion. Both callbacks are invoked to verify that
+ * their aggregate initialisers contain the correct function address. The pragma in
+ * ambiguousoverload.h schedules the companion translation unit so this remains one autotest target.
+ */
+void setup(void)
+{
+	struct Holder holder = { .value = 1, .callback = clearView };
+	struct CallbackHolder callbackHolder = { .callback = clearView };
+	holder.callback();
+	callbackHolder.callback();
+}