--- cvsup-snap-16.1h/ezm3-1.2/language/modula3/m3compiler/m3cc/gcc/include/obstack.h	2003-01-11 21:58:43.000000000 +0100
+++ cvsup-snap-16.1h.new/ezm3-1.2/language/modula3/m3compiler/m3cc/gcc/include/obstack.h	2005-03-26 18:44:03.000000000 +0100
@@ -423,7 +423,8 @@
 ({ struct obstack *__o = (OBSTACK);					\
    if (__o->next_free + sizeof (void *) > __o->chunk_limit)		\
      _obstack_newchunk (__o, sizeof (void *));				\
-   *((void **)__o->next_free)++ = ((void *)datum);			\
+   *((void **)__o->next_free) = ((void *)datum);			\
+   __o->next_free += sizeof(void *);					\
    (void) 0; })
 
 # define obstack_int_grow(OBSTACK,datum)				\