1482   Wal *pRet;                      /* Object to allocate and return */  in sqlite3WalOpen()  local
1535   pRet = (Wal*)sqlite3MallocZero(sizeof(Wal) + pVfs->szOsFile);  in sqlite3WalOpen()
1536   if( !pRet ){  in sqlite3WalOpen()
1540   pRet->pVfs = pVfs;  in sqlite3WalOpen()
1541   pRet->pWalFd = (sqlite3_file *)&pRet[1];  in sqlite3WalOpen()
1542   pRet->pDbFd = pDbFd;  in sqlite3WalOpen()
1543   pRet->readLock = -1;  in sqlite3WalOpen()
1544   pRet->mxWalSize = mxWalSize;  in sqlite3WalOpen()
1545   pRet->zWalName = zWalName;  in sqlite3WalOpen()
1546   pRet->syncHeader = 1;  in sqlite3WalOpen()
1547   pRet->padToSectorBoundary = 1;  in sqlite3WalOpen()
1548   pRet->exclusiveMode = (bNoShm ? WAL_HEAPMEMORY_MODE: WAL_NORMAL_MODE);  in sqlite3WalOpen()
1552   rc = sqlite3OsOpen(pVfs, zWalName, pRet->pWalFd, flags, &flags);  in sqlite3WalOpen()
1554     pRet->readOnly = WAL_RDONLY;  in sqlite3WalOpen()
1558     walIndexClose(pRet, 0);  in sqlite3WalOpen()
1559     sqlite3OsClose(pRet->pWalFd);  in sqlite3WalOpen()
1560     sqlite3_free(pRet);  in sqlite3WalOpen()
1563     if( iDC & SQLITE_IOCAP_SEQUENTIAL ){ pRet->syncHeader = 0; }  in sqlite3WalOpen()
1565       pRet->padToSectorBoundary = 0;  in sqlite3WalOpen()
1567     *ppWal = pRet;  in sqlite3WalOpen()
1568     WALTRACE(("WAL%d: opened\n", pRet));  in sqlite3WalOpen()
4053   WalIndexHdr *pRet;  in sqlite3WalSnapshotGet()  local
4062   pRet = (WalIndexHdr*)sqlite3_malloc(sizeof(WalIndexHdr));  in sqlite3WalSnapshotGet()
4063   if( pRet==0 ){  in sqlite3WalSnapshotGet()
4066     memcpy(pRet, &pWal->hdr, sizeof(WalIndexHdr));  in sqlite3WalSnapshotGet()
4067     *ppSnapshot = (sqlite3_snapshot*)pRet;  in sqlite3WalSnapshotGet()