zig: linux exit signal

main.zig

var frame: anyframe = undefined;

pub fn main() !void {
    print("Before\n", .{});

    const handler = struct {
        fn impl(sig: i32, info: *std.os.siginfo_t, ucontext: ?*c_void) callconv(.C) void {
            resume frame;
        }
    };

    const action = &std.os.Sigaction{
        .sigaction = handler.impl,
        .mask = std.os.empty_sigset,
        .flags = 0,
        .restorer = null,
    };

    std.os.sigaction(std.os.SIGINT, action, null);

    suspend frame = @frame();

    print("\nAfter\n", .{});
}