Fix BUF_* macros to handle indirect buffers properly (Bug#8219).

* buffer.h (BUF_BEGV, BUF_BEGV_BYTE, BUF_ZV, BUF_ZV_BYTE, BUF_PT)
(BUF_PT_BYTE): Rewrite to handle indirect buffers (Bug#8219).
These macros can no longer be used for assignment.

* buffer.c (Fget_buffer_create, Fmake_indirect_buffer): Assign
struct members directly, instead of using BUF_BEGV etc.
(record_buffer_markers, fetch_buffer_markers): New functions for
recording and fetching special buffer markers.
(set_buffer_internal_1, set_buffer_temp): Use them.

* lread.c (unreadchar): Use SET_BUF_PT_BOTH.

* insdel.c (adjust_point): Use SET_BUF_PT_BOTH.

* intervals.c (temp_set_point_both): Use SET_BUF_PT_BOTH.
(get_local_map): Use SET_BUF_BEGV_BOTH and SET_BUF_ZV_BOTH.

* xdisp.c (hscroll_window_tree):
(reconsider_clip_changes): Use PT instead of BUF_PT.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 3d5f3e0c387..bad9b8dd4b7 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,25 @@
+2011-03-13  Chong Yidong  <cyd@stupidchicken.com>
+
+        * buffer.h (BUF_BEGV, BUF_BEGV_BYTE, BUF_ZV, BUF_ZV_BYTE, BUF_PT)
+        (BUF_PT_BYTE): Rewrite to handle indirect buffers (Bug#8219).
+        These macros can no longer be used for assignment.
+
+        * buffer.c (Fget_buffer_create, Fmake_indirect_buffer): Assign
+        struct members directly, instead of using BUF_BEGV etc.
+        (record_buffer_markers, fetch_buffer_markers): New functions for
+        recording and fetching special buffer markers.
+        (set_buffer_internal_1, set_buffer_temp): Use them.
+
+        * lread.c (unreadchar): Use SET_BUF_PT_BOTH.
+
+        * insdel.c (adjust_point): Use SET_BUF_PT_BOTH.
+
+        * intervals.c (temp_set_point_both): Use SET_BUF_PT_BOTH.
+        (get_local_map): Use SET_BUF_BEGV_BOTH and SET_BUF_ZV_BOTH.
+
+        * xdisp.c (hscroll_window_tree):
+        (reconsider_clip_changes): Use PT instead of BUF_PT.
+
 2011-03-13  Eli Zaretskii  <eliz@gnu.org>
 
         * makefile.w32-in ($(BLD)/editfns.$(O)): Depend on