Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -1953,11 +1953,11 @@
   }
 
   /* If obtaining a child page for a cursor, we must verify that the page is
   ** compatible with the root page. */
   if( pCur
-   && ((*ppPage)->nCell<1 || (*ppPage)->intKey!=pCur->apPage[0]->intKey)
+   && ((*ppPage)->nCell<1 || (*ppPage)->intKey!=pCur->curIntKey)
   ){
     rc = SQLITE_CORRUPT_BKPT;
     releasePage(*ppPage);
     goto getAndInitPage_error;
   }
@@ -4782,10 +4782,11 @@
     if( rc!=SQLITE_OK ){
       pCur->eState = CURSOR_INVALID;
       return rc;
     }
     pCur->iPage = 0;
+    pCur->curIntKey = pCur->apPage[0]->intKey;
   }
   pRoot = pCur->apPage[0];
   assert( pRoot->pgno==pCur->pgnoRoot );
 
   /* If pCur->pKeyInfo is not NULL, then the caller that opened this cursor

Index: src/btreeInt.h
==================================================================
--- src/btreeInt.h
+++ src/btreeInt.h
@@ -506,11 +506,10 @@
 */
 struct BtCursor {
   Btree *pBtree;            /* The Btree to which this cursor belongs */
   BtShared *pBt;            /* The BtShared this cursor points to */
   BtCursor *pNext, *pPrev;  /* Forms a linked list of all cursors */
-  struct KeyInfo *pKeyInfo; /* Argument passed to comparison function */
   Pgno *aOverflow;          /* Cache of overflow page locations */
   CellInfo info;            /* A parse of the cell we are pointing at */
   i64 nKey;                 /* Size of pKey, or last integer key */
   void *pKey;               /* Saved key that was cursor last known position */
   Pgno pgnoRoot;            /* The root page of this tree */
@@ -518,12 +517,17 @@
   int skipNext;    /* Prev() is noop if negative. Next() is noop if positive.
                    ** Error code if eState==CURSOR_FAULT */
   u8 curFlags;              /* zero or more BTCF_* flags defined below */
   u8 curPagerFlags;         /* Flags to send to sqlite3PagerAcquire() */
   u8 eState;                /* One of the CURSOR_XXX constants (see below) */
-  u8 hints;                             /* As configured by CursorSetHints() */
-  i16 iPage;                            /* Index of current page in apPage */
+  u8 hints;                 /* As configured by CursorSetHints() */
+  /* All fields above are zeroed when the cursor is allocated.  See
+  ** sqlite3BtreeCursorZero().  Fields that follow must be manually
+  ** initialized. */
+  i8 iPage;                 /* Index of current page in apPage */
+  u8 curIntKey;             /* Value of apPage[0]->intKey */
+  struct KeyInfo *pKeyInfo; /* Argument passed to comparison function */
   u16 aiIdx[BTCURSOR_MAX_DEPTH];        /* Current index in apPage[i] */
   MemPage *apPage[BTCURSOR_MAX_DEPTH];  /* Pages from root to current page */
 };
 
 /*