Nik Everett b0c9759441 Painless: Don't allow casting from void to def (#22969)
Painless can cast anything into the magic type `def` but it
really shouldn't try to cast **nothing** into `def`. That causes
the byte code generation library to freak out a little.

Closes #22908
2017-02-03 16:38:47 -05:00
..