Merge from trunk.

[bpt/emacs.git] / src / buffer.c

diff --git a/src/buffer.c b/src/buffer.c
index 006153b..48dde18 100644 (file)
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -152,7 +152,7 @@ Lisp_Object Qmodification_hooks;
 Lisp_Object Qinsert_in_front_hooks;
 Lisp_Object Qinsert_behind_hooks;
 
-static void alloc_buffer_text (struct buffer *, size_t);
+static void alloc_buffer_text (struct buffer *, ptrdiff_t);
 static void free_buffer_text (struct buffer *b);
 static struct Lisp_Overlay * copy_overlays (struct buffer *, struct Lisp_Overlay *);
 static void modify_overlay (struct buffer *, EMACS_INT, EMACS_INT);
@@ -471,8 +471,8 @@ clone_per_buffer_values (struct buffer *from, struct buffer *to)
 
   /* buffer-local Lisp variables start at `undo_list',
      tho only the ones from `name' on are GC'd normally.  */
-  for (offset = PER_BUFFER_VAR_OFFSET (undo_list);
-       offset < sizeof *to;
+  for (offset = PER_BUFFER_VAR_OFFSET (FIRST_FIELD_PER_BUFFER);
+       offset <= PER_BUFFER_VAR_OFFSET (LAST_FIELD_PER_BUFFER);
        offset += sizeof (Lisp_Object))
     {
       Lisp_Object obj;
@@ -830,8 +830,8 @@ reset_buffer_local_variables (register struct buffer *b, int permanent_too)
 
   /* buffer-local Lisp variables start at `undo_list',
      tho only the ones from `name' on are GC'd normally.  */
-  for (offset = PER_BUFFER_VAR_OFFSET (undo_list);
-       offset < sizeof *b;
+  for (offset = PER_BUFFER_VAR_OFFSET (FIRST_FIELD_PER_BUFFER);
+       offset <= PER_BUFFER_VAR_OFFSET (LAST_FIELD_PER_BUFFER);
        offset += sizeof (Lisp_Object))
     {
       int idx = PER_BUFFER_IDX (offset);
@@ -1055,8 +1055,8 @@ No argument or nil as argument means use current buffer as BUFFER.  */)
 
     /* buffer-local Lisp variables start at `undo_list',
        tho only the ones from `name' on are GC'd normally.  */
-    for (offset = PER_BUFFER_VAR_OFFSET (undo_list);
-        offset < sizeof (struct buffer);
+    for (offset = PER_BUFFER_VAR_OFFSET (FIRST_FIELD_PER_BUFFER);
+        offset <= PER_BUFFER_VAR_OFFSET (LAST_FIELD_PER_BUFFER);
         /* sizeof EMACS_INT == sizeof Lisp_Object */
         offset += (sizeof (EMACS_INT)))
       {
@@ -4056,7 +4056,8 @@ DEFUN ("overlay-get", Foverlay_get, Soverlay_get, 2, 2, 0,
 }
 
 DEFUN ("overlay-put", Foverlay_put, Soverlay_put, 3, 3, 0,
-       doc: /* Set one property of overlay OVERLAY: give property PROP value VALUE.  */)
+       doc: /* Set one property of overlay OVERLAY: give property PROP value VALUE.
+VALUE will be returned.*/)
   (Lisp_Object overlay, Lisp_Object prop, Lisp_Object value)
 {
   Lisp_Object tail, buffer;
@@ -4815,7 +4816,7 @@ extern void r_alloc_free (POINTER_TYPE **ptr);
 /* Allocate NBYTES bytes for buffer B's text buffer.  */
 
 static void
-alloc_buffer_text (struct buffer *b, size_t nbytes)
+alloc_buffer_text (struct buffer *b, ptrdiff_t nbytes)
 {
   POINTER_TYPE *p;
 
@@ -4845,8 +4846,8 @@ void
 enlarge_buffer_text (struct buffer *b, EMACS_INT delta)
 {
   POINTER_TYPE *p;
-  size_t nbytes = (BUF_Z_BYTE (b) - BUF_BEG_BYTE (b) + BUF_GAP_SIZE (b) + 1
-                  + delta);
+  ptrdiff_t nbytes = (BUF_Z_BYTE (b) - BUF_BEG_BYTE (b) + BUF_GAP_SIZE (b) + 1
+                     + delta);
   BLOCK_INPUT;
 #if defined USE_MMAP_FOR_BUFFERS
   p = mmap_realloc ((POINTER_TYPE **) &b->text->beg, nbytes);