Another ptrdiff_t

[Eli Zaretskii <eliz@gnu.org>]

Another ptrdiff_t enters the scene.

Can we perhaps have some conventions regarding which integer types to
use in what situations?


=== modified file 'src/ChangeLog'
--- src/ChangeLog	2012-07-21 19:26:25 +0000
+++ src/ChangeLog	2012-07-22 03:44:35 +0000
@@ -1,3 +1,8 @@
+2012-07-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* buffer.h (struct buffer.indirections): Now ptrdiff_t, not int,
+	as it's limited by the amount of memory, not by INT_MAX.
+
 2012-07-21  Eli Zaretskii  <eliz@gnu.org>
 
 	* keyboard.c (keys_of_keyboard): Bind language-change to 'ignore'

=== modified file 'src/buffer.h'
--- src/buffer.h	2012-07-20 16:05:47 +0000
+++ src/buffer.h	2012-07-22 03:44:35 +0000
@@ -776,9 +776,9 @@ struct buffer
   struct buffer *base_buffer;
 
   /* In an indirect buffer, this is -1. In an ordinary buffer,
-     it's the number of indirect buffers which shares our text;
+     it's the number of indirect buffers that share our text;
      zero means that we're the only owner of this text.  */
-  int indirections;
+  ptrdiff_t indirections;
 
   /* A non-zero value in slot IDX means that per-buffer variable
      with index IDX has a local value in this buffer.  The index IDX