How to set a default alignment for a given struct or for the entire file ?

[f6fvy]

Is there a way to apply a default alignment to all members of a struct, and/or to all members of a all struct in an entire file?

From what I understand, std::mem::AlignTo can only be used inside a structure to align the next member, but I can't find a way to apply this for all members (other than repeating it, which is quite tedious).

[WerWolv]

Hey, there isn't a built-in way directly right now. You can wrap both your struct and the AlignTo into another struct and place that but it's still just going to insert padding before your struct and not actually align the outer struct.

import std.mem;

struct Aligned<T, auto Alignment> {
    std::mem::AlignTo<Alignment>;
    T value;
} [[inline]];

struct ABC {
    u32 x;
};

struct Test {
    u8 x;
    Aligned<ABC, 16> abc;
};

Test test @ 0x00;

[f6fvy]

Thanks for the prompt reply and the help. Having the possibility to set a default alignment for all members of a struct could be a new feature for a future version ? Anyway, thanks for this great tool !

[WerWolv]

You're welcome!
Yeah we would need something like a [[aligned(16)]] attribute. I'll look into it