Nullability of generic references in delegates is lost under some circumstances
@mpiechotka
Submitted by Maciej Marcin Piechotka Link to original bug (#653403)
Description
Created attachment 190653 Test case - vala file
From code attached test<string>
should be equivalent to test2 but it is not (test2 sends a warning about null value and have g_return_val_if_fail in lambda).
Attachment 190653, "Test case - vala file":
func.vala
Version: 0.13.x