bug.zig

const std = @import("std");

const S = struct {
    x: u64,

    pub fn set(self: *@This(), in: u64) void {
        self.x = in;
    }
};

var array = comptime blk: {
    var array3 = [1]S{ S{ .x = 5 }, } ** 2;

    array3[1].set(7);

    break :blk array3;
};

pub fn main() void {
    std.debug.warn("{} {}\n", array[0], array[1]);
    // output is "7 7"
}