Packed structs and alignment

Mojo
1

Is there any good way to get a packed struct or control alignment in Mojo currently? Essentially I want the equivalent of the following Rust code, can’t seem to find a good way to do it. Searching the docs didn’t help

  1. #[repr(C, packed)]
struct MyStruct();

#[repr(align(64))]
struct MyStruct();
2

Also packed + aligned for those of us doing networking!

I don’t think there’s a way to do this right now.

1 Like
3

Hi @a2svior,

Thanks for sharing this question! I confirmed with the team that this is unfortunately not possible today (but will be needed in the future!).

3 Likes
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Okay, thanks for letting me know!

1 Like
5

I created [Feature Request] Support alignment on structs and/or struct fields · Issue #5168 · modular/modular · GitHub to track this. Should be easy.

1 Like
6

Many thanks! Excited about this

7

I’m interested in this too. I initially thought Layout handled this, but I realize Layout is for MAX’s linear algebra memory mapping.

Perhaps Layout could be separated from MAX and generalized to cover more common memory representation cases.

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