added tests as prepared by oliver

test/ref/cc65090124.c

@@ -0,0 +1,61 @@
+/*
+  !!DESCRIPTION!! 
+  !!ORIGIN!!      testsuite
+  !!LICENCE!!     Public Domain
+  !!AUTHOR!!
+*/
+
+/*
+there is a bug in the preprocessor (i think) ... the following works 
+(compiles) correctly:
+
+unsigned long fs,fd,a;
+
+unsigned long _func(unsigned long x,unsigned long y)
+{
+        return 0;
+}
+
+int main(void)
+{
+        fs=(_func((fd/a),(_func(2,0x0082c90f))));
+}
+
+now if i wrap _func into a macro like this:
+
+#define func(x,y)       _func(x,y)
+
+int main(void)
+{
+        fs=(func((fd/a),(func(2,0x0082c90f))));
+}
+
+i get "Error: `)' expected" on that line. (this is with the snapshot, freshly 
+compiled 5 minutes ago)
+*/
+
+unsigned long fs,fd,a;
+
+unsigned long _func1(unsigned long x,unsigned long y)
+{
+        return 0;
+}
+
+int test1(void)
+{
+        fs=(_func1((fd/a),(_func1(2,0x0082c90f))));
+}
+
+#define func(x,y)       _func1(x,y)
+
+int test2(void)
+{
+        fs=(func((fd/a),(func(2,0x0082c90f))));
+}
+
+int main(void)
+{
+    printf("it works :)\n");
+
+    return 0;
+}