struct A
{
    float4 a;
    float4 b;
    float4 c = { 1, 2, 3, 4 };
    float4 d = {({ {(({ 1, 2, 3, 4 }))} })}, { { 1, 2, 3, 4 } };
};

void main()
{
    "a string"
}