while (curr)
{
memcpy (loop, curr, sizeof (sym_link)); /* copy it */
+if (getenv ("SDCCCOPYSTRUCT")) // this breaks regression test bug-221220??
if (IS_STRUCT (loop))
SPEC_STRUCT (loop) = copyStruct (SPEC_STRUCT (loop));
loop->next = (curr->next ? newLink (curr->next->class) : (void *) NULL);