Git 2.23

diff --git a/compat/obstack.h b/compat/obstack.h
index ceb4bdbcdd6ed583ab3b7c9cc5d9d2783128dee6..ae36ed6a669d96266f01f4983b9d6a418e1dcfef 100644 (file)
--- a/compat/obstack.h
+++ b/compat/obstack.h
@@ -14,9 +14,8 @@
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
 /* Summary:
 
@@ -161,11 +160,15 @@ struct obstack            /* control current object in current chunk */
     void *tempptr;
   } temp;                      /* Temporary for some macros.  */
   int   alignment_mask;                /* Mask of alignment for each object. */
-  /* These prototypes vary based on `use_extra_arg', and we use
-     casts to the prototypeless function type in all assignments,
-     but having prototypes here quiets -Wstrict-prototypes.  */
-  struct _obstack_chunk *(*chunkfun) (void *, long);
-  void (*freefun) (void *, struct _obstack_chunk *);
+  /* These prototypes vary based on `use_extra_arg'. */
+  union {
+    void *(*plain) (long);
+    struct _obstack_chunk *(*extra) (void *, long);
+  } chunkfun;
+  union {
+    void (*plain) (void *);
+    void (*extra) (void *, struct _obstack_chunk *);
+  } freefun;
   void *extra_arg;             /* first arg for chunk alloc/dealloc funcs */
   unsigned use_extra_arg:1;    /* chunk alloc/dealloc funcs take extra arg */
   unsigned maybe_empty_object:1;/* There is a possibility that the current
@@ -236,10 +239,10 @@ extern void (*obstack_alloc_failed_handler) (void);
                    (void (*) (void *, void *)) (freefun), (arg))
 
 #define obstack_chunkfun(h, newchunkfun) \
-  ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun))
+  ((h)->chunkfun.extra = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun))
 
 #define obstack_freefun(h, newfreefun) \
-  ((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun))
+  ((h)->freefun.extra = (void (*)(void *, struct _obstack_chunk *)) (newfreefun))
 
 #define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = (achar))
 
@@ -493,7 +496,7 @@ __extension__                                                               \
 ( (h)->temp.tempint = (char *) (obj) - (char *) (h)->chunk,            \
   ((((h)->temp.tempint > 0                                             \
     && (h)->temp.tempint < (h)->chunk_limit - (char *) (h)->chunk))    \
-   ? (int) ((h)->next_free = (h)->object_base                          \
+   ? (ptrdiff_t) ((h)->next_free = (h)->object_base                            \
            = (h)->temp.tempint + (char *) (h)->chunk)                  \
    : (((obstack_free) ((h), (h)->temp.tempint + (char *) (h)->chunk), 0), 0)))