*** lib/regex_internal.c.ORIG	Tue Mar 18 09:58:19 2008
--- lib/regex_internal.c	Tue Mar 18 09:58:45 2008
***************
*** 880,885 ****
--- 880,888 ----
  internal_function
  re_node_set_alloc (re_node_set *set, int size)
  {
+   if ( size == 0 )
+     return REG_NOERROR;
+ 
    set->alloc = size;
    set->nelem = 0;
    set->elems = re_malloc (int, size);