zSymbol          1390 ext/sqlite3/libsqlite/sqlite3.c   void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);
zSymbol          1183 ext/sqlite3/libsqlite/sqlite3.h   void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);