Segmentation fault @each with argslist node-sass 3.4.2

[terrierscript]

I got segmentation error on node-sass v3.4.2.
This may occure when use @each loop with argslist.

// NG
@mixin some-fn($args...) {
  @each $item in $args {
    @debug($item);
  }
}

// OK
@mixin some-fn-arr($arr) {
  @each $item in $arr {
    @debug($item);
  }
}


.foo{
  @include some-fn(); // OK
  @include some-fn((a: "b")); // OK
  @include some-fn((a: "b", c: "d")); //OK
  @include some-fn-arr( () ); // OK
  @include some-fn( () ); // segmentation fault
}

[xzyfer]

@mgreter can you please provide a spec for this?

[mgreter]

Minimal case:

@mixin some-fn($args...) {
  @each $item in $args {
    @debug($item);
  }
}
.foo{
  @include some-fn( () ); // segmentation fault
}

[xzyfer]

Spec for this current fails due to #1768

[xzyfer]

Spec PR sass/sass-spec#632