* lisp/vc/vc-git.el (vc-git-grep): Use --no-color. (tiny change)

[gnu-emacs] / src / buffer.h

diff --git a/src/buffer.h b/src/buffer.h
index dc1d62beb00e102e4a3a7c965b599430a128923a..06864dd57894f390dc91379ac6dc2fbf5bccc4c7 100644 (file)
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -309,8 +309,10 @@ while (0)
 
 /* Maximum number of bytes in a buffer.
    A buffer cannot contain more bytes than a 1-origin fixnum can represent,
-   nor can it be so large that C pointer arithmetic stops working.  */
-#define BUF_BYTES_MAX min (MOST_POSITIVE_FIXNUM - 1, min (SIZE_MAX, PTRDIFF_MAX))
+   nor can it be so large that C pointer arithmetic stops working.
+   The ptrdiff_t cast ensures that this is signed, not unsigned.  */
+#define BUF_BYTES_MAX \
+  (ptrdiff_t) min (MOST_POSITIVE_FIXNUM - 1, min (SIZE_MAX, PTRDIFF_MAX))
 
 /* Return the address of byte position N in current buffer.  */
 
@@ -610,6 +612,7 @@ struct buffer
   /* Everything from here down must be a Lisp_Object.  */
   /* buffer-local Lisp variables start at `undo_list',
      tho only the ones from `name' on are GC'd normally.  */
+  #define FIRST_FIELD_PER_BUFFER undo_list
 
   /* Changes in the buffer are recorded here for undo.
      t means don't record anything.
@@ -844,6 +847,9 @@ struct buffer
      t means to use hollow box cursor.
      See `cursor-type' for other values.  */
   Lisp_Object BUFFER_INTERNAL_FIELD (cursor_in_non_selected_windows);
+
+  /* This must be the last field in the above list.  */
+  #define LAST_FIELD_PER_BUFFER cursor_in_non_selected_windows
 };
 
 \f
@@ -885,10 +891,10 @@ extern struct buffer buffer_local_symbols;
 extern void delete_all_overlays (struct buffer *);
 extern void reset_buffer (struct buffer *);
 extern void evaporate_overlays (EMACS_INT);
-extern int overlays_at (EMACS_INT pos, int extend, Lisp_Object **vec_ptr,
-                        int *len_ptr, EMACS_INT *next_ptr,
-                        EMACS_INT *prev_ptr, int change_req);
-extern int sort_overlays (Lisp_Object *, int, struct window *);
+extern ptrdiff_t overlays_at (EMACS_INT pos, int extend, Lisp_Object **vec_ptr,
+                             ptrdiff_t *len_ptr, EMACS_INT *next_ptr,
+                             EMACS_INT *prev_ptr, int change_req);
+extern ptrdiff_t sort_overlays (Lisp_Object *, ptrdiff_t, struct window *);
 extern void recenter_overlay_lists (struct buffer *, EMACS_INT);
 extern EMACS_INT overlay_strings (EMACS_INT, struct window *, unsigned char **);
 extern void validate_region (Lisp_Object *, Lisp_Object *);
@@ -906,7 +912,7 @@ extern void mmap_set_vars (int);
 
 #define GET_OVERLAYS_AT(posn, overlays, noverlays, nextp, chrq)                \
   do {                                                                 \
-    int maxlen = 40;                                                   \
+    ptrdiff_t maxlen = 40;                                                     \
     overlays = (Lisp_Object *) alloca (maxlen * sizeof (Lisp_Object)); \
     noverlays = overlays_at (posn, 0, &overlays, &maxlen,              \
                             nextp, NULL, chrq);                                \