I'm trying to bind a function that returns a fixed size array.

C definition:

/**
 * grx_color_alloc_ega_colors:
 *
 * Allocates an array of the 16 classic EGA colors. Use #GrxEgaColorIndex to
 * determine the color at each index of the array.
 *
 * Returns: (array fixed-size=16): array of color indexes
 */
GrxColor *grx_color_alloc_ega_colors(void);


Vapi:

        [CCode (array_length_cexpr = "16")]
        public static unowned Color[] alloc_ega_colors ();

However, array_length_cexpr is ignored and the generated code is the same as if the CCode attribute was omitted altogether. In other words...

    _tmp1_ = grx_color_alloc_ega_colors (&_tmp0_);


I also tried:

        [CCode (array_length = false, array_length_cexpr = "16")]
        public static unowned Color[] alloc_ega_colors ();

But that results in length = -1:

	_tmp0_ = grx_color_alloc_ega_colors ();
	self->priv->colors = _tmp0_;
	self->priv->colors_length1 = -1;


I was able to work around with:

        [CCode (cname = "grx_color_alloc_ega_colors", array_length = false)]
        static unowned Color[] _alloc_ega_colors ();
        [CCode (cname = "vala_grx_color_alloc_ega_colors")]
        public static unowned Color[] alloc_ega_colors () {
            unowned Color[] colors = _alloc_ega_colors ();
            colors.length = 16;
            return colors;
        }