added test related to issue #1552 fixed in pr #1571

test/val/bug1552.c

@@ -0,0 +1,42 @@
+
+/*
+    bug #1552 - crash in fuzix xec.c
+
+    cc65 -t none -O bug1552.c
+*/
+
+#include <stdio.h>
+
+typedef struct trenod *TREPTR;
+typedef struct whnod *WHPTR;
+
+struct trenod {
+    int tretyp;
+};
+
+struct whnod {
+    int whtyp;
+    TREPTR whtre;
+};
+
+int execute(TREPTR argt, int execflg, int *pf1, int *pf2)
+{
+    register TREPTR t;
+    int type;
+    switch (type) 
+    {
+        case 6:
+        {
+            while ((execute(((WHPTR) t)->whtre, 0, NULL, NULL) == 0) == (type == 5)) {
+
+            }
+            break;
+        }
+    }
+    return 0;
+}
+
+int main(void)
+{
+    return execute((TREPTR)42, 2, (int *)3, (int *)4);
+}