diff --git a/manifest b/manifest
index eebce2498f..2d7b97dbe2 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improvements\sto\scomments\sin\sbtree.c:freeSpace().\s\sAdded\sa\stestcase()\smacro\nto\sverify\sa\sboundary\scase\sis\stested\sin\ssqlite3BtreeInitPage().\s(CVS\s6862)
-D 2009-07-08T16:54:40
+C Add\sanother\sboundary-condition\stestcase()\smacro\sto\sbtree.c.\s\sCorrect\sthe\ncomment\son\smodifyPagePointer().\s(CVS\s6863)
+D 2009-07-08T18:12:49
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in df9359da7a726ccb67a45db905c5447d5c00c6ef
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -106,7 +106,7 @@ F src/auth.c 802a9439dfa0b8c208b10055cba400e82ef18025
 F src/backup.c 6f1c2d9862c8a3feb7739dfcca02c1f5352e37f3
 F src/bitvec.c 0ef0651714728055d43de7a4cdd95e703fac0119
 F src/btmutex.c 9b899c0d8df3bd68f527b0afe03088321b696d3c
-F src/btree.c 88efb67b8816b6e773cfc824916a4a1df1178715
+F src/btree.c a2117e0dde3eeb5845b3a6f56bfed2255e3eefdb
 F src/btree.h e761619e76a1125d2d82bd3613b5a7ac7d1ee6f7
 F src/btreeInt.h b31e5ac04181c7e2892c33ab06228c551df6233c
 F src/build.c 867028ee9f63f7bc8eb8d4a720bb98cf9b9a12b4
@@ -740,7 +740,7 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
 F tool/vdbe-compress.tcl 672f81d693a03f80f5ae60bfefacd8a349e76746
-P 196cbf82290a308e78b13044d0fae993f2d5cb90
-R a273a9df3f7120ba57b67913a5610fd6
+P 5ac991b3cea214095b8369e85f3e0ad8e5059ad6
+R ca47272c465be8241f9f27fe855a504a
 U drh
-Z b118b571b45c65757687df0def85d091
+Z b7a8ccb171b7c92d55cc6ecbc4d9687d
diff --git a/manifest.uuid b/manifest.uuid
index 1bc0478ed5..5446f64567 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-5ac991b3cea214095b8369e85f3e0ad8e5059ad6
\ No newline at end of file
+fed66e8695ee552d5ca05ac91485cfc5940e7496
\ No newline at end of file
diff --git a/src/btree.c b/src/btree.c
index e466a5a5ac..cad5fa58f8 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -9,7 +9,7 @@
 **    May you share freely, never taking more than you give.
 **
 *************************************************************************
-** $Id: btree.c,v 1.662 2009/07/08 16:54:40 drh Exp $
+** $Id: btree.c,v 1.663 2009/07/08 18:12:49 drh Exp $
 **
 ** This file implements a external (disk-based) database using BTrees.
 ** See the header comment on "btreeInt.h" for additional information.
@@ -1549,6 +1549,7 @@ static int getAndInitPage(
     rc = SQLITE_OK;
   }else{
     /* Page not in cache.  Acquire it. */
+    testcase( pgno==pagerPagecount(pBt) );
     if( pgno>pagerPagecount(pBt) ){
       return SQLITE_CORRUPT_BKPT; 
     }
@@ -2545,10 +2546,9 @@ set_child_ptrmaps_out:
 }
 
 /*
-** Somewhere on pPage, which is guaranteed to be a btree page, not an overflow
-** page, is a pointer to page iFrom. Modify this pointer so that it points to
-** iTo. Parameter eType describes the type of pointer to be modified, as 
-** follows:
+** Somewhere on pPage is a pointer to page iFrom.  Modify this pointer so
+** that it points to iTo. Parameter eType describes the type of pointer to
+** be modified, as  follows:
 **
 ** PTRMAP_BTREE:     pPage is a btree-page. The pointer points at a child 
 **                   page of pPage.