--- obstack.h.orig	Wed Mar 14 11:27:43 2001
+++ obstack.h	Wed Jan 14 04:52:05 2015
@@ -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);			\
+   (void **)__o->next_free++;						\
    (void) 0; })
 
 # define obstack_int_grow(OBSTACK,datum)				\
@@ -431,7 +432,8 @@
 ({ struct obstack *__o = (OBSTACK);					\
    if (__o->next_free + sizeof (int) > __o->chunk_limit)		\
      _obstack_newchunk (__o, sizeof (int));				\
-   *((int *)__o->next_free)++ = ((int)datum);				\
+   *((int *)__o->next_free) = ((int)datum);				\
+   (int *)__o->next_free++;						\
    (void) 0; })
 
 # define obstack_ptr_grow_fast(h,aptr) (*((void **) (h)->next_free)++ = (void *)aptr)