static[T] hangs compiler

gistfile1.nim

type
  RectArray*[R, C: static[int], T] = distinct array[R * C, T]

  StaticMatrix*[R, C: static[int], T] = object
    elements*: RectArray[R, C, T]

  StaticVector*[N: static[int], T] = StaticMatrix[N, 1, T]


proc foo*[N, T](a: StaticVector[N, T]): T = 0.T
proc foobar*[N, T](a, b: StaticVector[N, T]): T = 0.T


var a: StaticVector[3, int]

echo foo(a)       # OK
echo foobar(a, a) # <--- hangs compiler

Fixed in nim-lang/Nim@442dc30