compiler fatal error on lack of type arguments

[Adam Sherwood]

Specification

Instead of returning information to the user about needing to specify type arguments for Wrapper (as in Wrapper[int, int]). Instead the compiler hits a fatal error.

Example

type
  Wrapper*[K, V] = object
    node*: (K, V)

echo sizeof(Wrapper)

Actual Output

Fatal: Internal unreachable code executed - ccgtypes.nim(708, 18) (getTypeDescAux(tyGenericParam)) should never be called.

Expected Output

I would expect the compiler to fail to compile the code and print a message to the user about the lack of type arguments.

Possible Solution

Additional Information

References

[zerbina]

As per our discussion on Matrix, I've assigned you to this issue, in order to make it easier to keep of who is working on what.

[zerbina]

Fixed by #1328.