Large object write-into-middle fix from Tatsuo Ishii.

diff --git a/src/backend/storage/large_object/inv_api.c b/src/backend/storage/large_object/inv_api.c
index 2802a16c13b80b195c91ed75030c5686836d26f0..b8d13a21e2257111d52cb566b705a2559b213c01 100644 (file)
--- a/src/backend/storage/large_object/inv_api.c
+++ b/src/backend/storage/large_object/inv_api.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/backend/storage/large_object/inv_api.c,v 1.47 1999/02/03 21:17:20 momjian Exp $
+ *       $Header: /cvsroot/pgsql/src/backend/storage/large_object/inv_api.c,v 1.48 1999/02/04 14:52:00 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -540,10 +540,16 @@ inv_write(LargeObjectDesc *obj_desc, char *buf, int nbytes)
                else
                {
                        if (obj_desc->offset > obj_desc->highbyte)
+                       {
                                tuplen = inv_wrnew(obj_desc, buf, nbytes - nwritten);
+                               ReleaseBuffer(buffer);
+                       }
                        else
                                tuplen = inv_wrold(obj_desc, buf, nbytes - nwritten, &tuple, buffer);
-                       ReleaseBuffer(buffer);
+                               /* inv_wrold() has already issued WriteBuffer()
+                                  which has decremented local reference counter
+                                  (LocalRefCount). So we should not call
+                                  ReleaseBuffer() here. -- Tatsuo 99/2/4 */
                }
 
                /* move pointers past the amount we just wrote */