Incorrect assignment in case of pointer to alias of slice

[jvergison]

Consider following declared types, as found in the github.com/golang/geo/s2 package:

package s2

type CellID uint64
type CellUnion []CellID

This package is then used in another file as follows:

type Filter struct {
  Cells *s2.CellUnion `json:"cells"`
}

Running ffjson for this file produces the following code, and no error messages:
j.Cells = &[]s2.CellID{}

However, this produces the following error when building:

cannot use []s2.CellID literal (type *[]s2.CellID) as type *s2.CellUnion in assignment

The correct code in this case would be

cu := s2.CellUnion([]s2.CellID{})
j.Cells = &cu

[erikdubbelboer]

See #244

[andersfylling]

Has anyone verified PR #244 to actually work?
It lacks unit tests, so I'm just curious.

[erikdubbelboer]

@andersfylling I have :) but I missed the question for a test case. I'll add this this weekend.

[erikdubbelboer]

@andersfylling I have updated the pull request with a test case.

[jflipts]

This issue is still present in the current master branch, when will the fix be merged?