btreePageLookup  52565 ext/sqlite3/libsqlite/sqlite3.c     pPage = btreePageLookup(pBt, iPage);
btreePageLookup  52712 ext/sqlite3/libsqlite/sqlite3.c     if( ( pOvfl || ((pOvfl = btreePageLookup(pBt, ovflPgno))!=0) )