added tests as prepared by oliver

test/ref/cc65080328.c

@@ -0,0 +1,24 @@
+/*
+  !!DESCRIPTION!! 
+  !!ORIGIN!!      testsuite
+  !!LICENCE!!     Public Domain
+  !!AUTHOR!!
+*/
+
+/*
+The following code produces an 'Error: Incompatible pointer types' at
+the last line when compiling with snapshot-2.11.9.20080316 without
+optimizations. If I remove the struct inside f() it compiles fine ?!?
+
+Best, Oliver
+*/
+
+void f(void){struct{int i;}d;}
+struct{void(*p)(void);}s={f};
+
+int main(void)
+{
+    printf("it works :)\n");
+
+    return 0;
+}