*** gcc/tree.c.orig	Wed Aug 20 03:07:35 2003
--- gcc/tree.c	Sat Sep 13 13:23:49 2003
***************
*** 4920,4925 ****
--- 4920,4929 ----
  	    && ! REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (TREE_IMAGPART (init))));
      case CONSTRUCTOR:
        {
+         /* A set constructor `[0]' is not the same as `[]'. */
+         if (TREE_CODE (TREE_TYPE (init)) == SET_TYPE && TREE_OPERAND (init, 1))
+           return false;
+ 
  	if (AGGREGATE_TYPE_P (TREE_TYPE (init)))
  	  {
  	    tree aggr_init = TREE_OPERAND (init, 1);