1300 – Issues with struct in compile-time function

May be related to 1204
struct Bar
{
 int x;
}
int foo()
{
 // Fails with 'Error: cannot cast int to Bar' if explicit initialization is omitted:
 Bar b = Bar.init;
 b.x = 1;
 b = bar(b); // Error: cannot evaluate foo() at compile time
 return b.x;
}
Bar bar(Bar b)
{
 return b;
}
void main(char[][] args)
{
 static x = foo();
}

More test cases:
struct Bar
{
 int x;
}
int foo()
{
 Bar b = Bar.init;
 b.x = 100;
 for (size_t i = 0; i < b.x; i++) // b.x is the stumbling block here 
 {
 }
 b.x++; // fails while b.x = b.x + 1 works
 return b.x;
}
void main(char[][] args)
{
 static x = foo();
}

Fixed DMD 1.019 and 2.003