memory corruption when storing an array of type in a field

[vrischmann]

Hello,

the following code produces garbage when I run it:

const std = @import("std");

const Foobar = struct {
    const Self = @This();

    myTypes: [128]type,

    str: [1024]u8,
    str_len: usize,

    fn from(comptime s: []const u8) Self {
        comptime var foobar: Foobar = undefined;

        std.mem.copy(u8, &foobar.str, s);
        foobar.str_len = s.len;

        return foobar;
    }

    fn getString(comptime self: *Self) []const u8 {
        return self.str[0..self.str_len];
    }
};

pub fn main() anyerror!void {
    comptime var foobar = Foobar.from(
        \\ Enim tempora est occaecati aut delectus quibusdam modi saepe. Fugiat odit id autem et praesentium provident. Iure voluptas explicabo ipsa provident eaque. Repellat dolorum voluptatem velit harum alias nobis quo et. Sit doloribus sit molestias. Dolorem laborum eligendi aut.
    );

    std.debug.print("foobar: {}\n", .{foobar.getString()});
}

I get this output:

foobar: 0+ *1 10 01  D1 0
                            1 / ! / 0

but if I comment the line myTypes: [128]type it works fine:

foobar:  Enim tempora est occaecati aut delectus quibusdam modi saepe. Fugiat odit id autem et praesentium provident. Iure voluptas explicabo ipsa provident eaque. Repellat dolorum voluptatem velit harum alias nobis quo et. Sit doloribus sit molestias. Dolorem laborum eligendi aut.