Check for ldc.conf next to the ldc binary before home and etc. The new search order is * current working directory * next to executable * user home directory * prefix/etc * prefix/etc/ldc * /etc * /etc/ldc

void main()
{
    S t;
}

struct T
{
    int i;
    S* s;
}

struct S
{
    long i;
    T* t;
}