Void() does not work

[eschnett]

Void() returns an error:

Void()
LoadError: MethodError: `convert` has no method matching convert(::Type{Void})

This is

Julia Version 0.4.0-rc1+7

[yuyichao]

Isn't it supposed to be fixed by #12962 ?

[yuyichao]

I see, so #12962 addes the method to Core.call instead of Base.call

julia> Core.call(Void)

julia> Base.call(Void)
ERROR: MethodError: `convert` has no method matching convert(::Type{Void})
This may have arisen from a call to the constructor Void(...),
since type constructors fall back to convert methods.
Closest candidates are:
  convert{T}(::Type{T}, ::T)
  call{T}(::Type{T}, ::Any)
 in call at ./essentials.jl:57

[eschnett]

I found this when I tried to add a test case... should have done that earlier.

Do you know how to fix this?

[yuyichao]

Unless you want to use that VERY early in bootstrap or in inference, adding it in essential.jl or anything sourced by sysimg.jl that seems fit should work.

[tkelman]

backported in #13107