Variadic template alignment incorrect

[HuskyNator]

I'm unaware of the implementation details, but using variadic templates seemingly causes alignment issues.

Example:

import std.stdio;

struct A(T) {
    T a;
    this(size_t L, size_t R)(T[L] left, T[R] right...) if (L + R == 4) {
        this.a = right[0];
    }
}

void main() {
    A!float a = A!float([1, 2, 3], 0);
    writeln(a.a); // 2 (not 0!)
}

Environment

Version: DMD v2.190.1 (Works fine on 2.190.0 and ldc2)
Platform: Windows 64 bits

---

SideNote:

How come I cannot assign lables/types to this issue?
Would be useful.

[thewilsonator]

Version: DMD v2.190.1 (Works fine on 2.190.0 and ldc2)

I assume you mean 2.109.1 not 2.190.1.

How come I cannot assign lables/types to this issue?

Because you are not a member of this repository.

writeln(a.a); // 2 (not 0!)

are you saying that this prints 2? for me on run.dlang.io this prints 0. What I observe is what I would expect to happen.

[HuskyNator]

That is correct, 2.190.1. Indeed it prints 0 on run.dlang.io.
@pbackus told me this was because run.dlang.io is using 2.190.0, also stating the latest commit dmd master version also prints 0 (I'm currently unable to confirm)