iDC              50212 ext/sqlite3/libsqlite/sqlite3.c     int iDC = sqlite3OsDeviceCharacteristics(pDbFd);
iDC              50213 ext/sqlite3/libsqlite/sqlite3.c     if( iDC & SQLITE_IOCAP_SEQUENTIAL ){ pRet->syncHeader = 0; }
iDC              50214 ext/sqlite3/libsqlite/sqlite3.c     if( iDC & SQLITE_IOCAP_POWERSAFE_OVERWRITE ){