Varargs issue with LDC

[Johan]

On Wednesday, 31 January 2024 at 17:16:51 UTC, Don Allen wrote:
>
> The called gtk function has this prototype, which I believe is 
> correct:
> ````
> extern (C) GtkListStore* gtk_list_store_new (gint n_columns, 
> ...);
> ````
> The call site looks like
> ````
>         writefln("debug: %d",  NMktStore.num_cols);
>         store = gtk_list_store_new(NMktStore.num_cols,
>                 g_type_string, // date
>                 g_type_string, // num
>                 g_type_string, // description
>                 g_type_boolean, // r
>                 g_type_string, // transaction guid
>                 g_type_string, // value
>                 g_type_string); // balance
> ````

Did you check that the D type of `g_type_string/boolean` matches 
the size of the type of the C constants? (`GType` which is 
`unsigned long` in C, 
https://codebrowser.dev/gtk/gtk/subprojects/glib/gobject/gtype.h.html#383)

-Johan