3140   u32 iRead = 0;                  /* If !=0, WAL frame to return data from */  in sqlite3WalFindFrame()  local
3201         assert( iFrame>iRead || CORRUPT_DB );  in sqlite3WalFindFrame()
3202         iRead = iFrame;  in sqlite3WalFindFrame()
3209     if( iRead ) break;  in sqlite3WalFindFrame()
3226     assert( iRead==iRead2 );  in sqlite3WalFindFrame()
3230   *piRead = iRead;  in sqlite3WalFindFrame()
3241   u32 iRead,                      /* Frame to read */  in sqlite3WalReadFrame()  argument
3251   iOffset = walFrameOffset(iRead, sz) + WAL_FRAME_HDRSIZE;  in sqlite3WalReadFrame()
3560   u32 iRead;                      /* Next frame to read from wal file */  in walRewriteChecksums()  local
3581   iRead = pWal->iReCksum;  in walRewriteChecksums()
3583   for(; rc==SQLITE_OK && iRead<=iLast; iRead++){  in walRewriteChecksums()
3584     i64 iOff = walFrameOffset(iRead, szPage);  in walRewriteChecksums()