[latch]

It wasn't clear from the examples, and the gist doesn't have a `deinit` method, so what happens if an error needs to own data?

> Here, sqlite.ErrorPayload.init saves 500 bytes of error message from sqlite

Who owns those 500 bytes and where are they being freed?

[srcreigh]

It's just stored as a [256]u8 in the struct.

  // sqlite.zig
  pub const ErrorPayload = struct {
      message: [256]u8,
  
      pub fn init(db: *c.sqlite3) @This() {
          var self = std.mem.zeroes(@This());
          var fw = std.Io.Writer.fixed(self.message[0..]);
          _ = fw.writeAll(std.mem.span(c.sqlite3_errmsg(db))) catch |err| switch (err) {
              error.WriteFailed => return self, // full
          };
          return self;
      }
  };

[latch]

And what pattern would you recommend if you needed to allocate?