cparser can't handle designated initializers in anonymous sub structs

[GabrielRavier]

struct s
{
    int a;
    struct
    {
        int b;
    };
};

struct s x = {.b = 5};

cparser outputs this :

cparser: src/parser/parser.c:1692: descend_into_subtype: Assertion `is_type_array(top_type)' failed.
Aborted (core dumped)