Wal              36740 ext/sqlite3/libsqlite/sqlite3.c typedef struct Wal Wal;
Wal              37482 ext/sqlite3/libsqlite/sqlite3.c   Wal *pWal;                  /* Write-ahead log used by "journal_mode=wal" */
Wal              44880 ext/sqlite3/libsqlite/sqlite3.c   Wal *pRet;                      /* Object to allocate and return */
Wal              44900 ext/sqlite3/libsqlite/sqlite3.c   pRet = (Wal*)sqlite3MallocZero(sizeof(Wal) + pVfs->szOsFile);