c3c/test/test_suite/cast/cast_struct.c3

struct Foo
{
    int a;
    float b;
}

struct Bar
{
    int b;
    float c;
}

struct Baz
{
    int b;
    int c;
}

struct BazTwo
{
    int[1] d;
    int e;
}

fn void test()
{
    Foo x;
    { Bar y = (Bar)(x); } // #error: 'Foo' to 'Bar'

    Baz z;
    { int[2] w = (int[2])(z); } // #error: 'Baz' to 'int[2]'
    int[2] w;
    z = (Baz)(w); // #error: to 'Baz'
    { BazTwo v = (BazTwo)(z); } // #error: 'Baz' to 'BazTwo'
    BazTwo v;
    v = (BazTwo)(w); // #error: to 'BazTwo'
    z = (Baz)(v);    // #error: possible to cast 'BazTwo' to 'Baz'
    w = (int[2])(v); // #error: possible to cast 'BazTwo' to 'int[2]'
}