@compat get for Nullable types throws a BoundsError

[BenLauwens]

I am the maintainer of SimJulia and recently the @compat macro for getting a Nullable type in Julia v0.3 and Julia v0.4 throws a BoundsError.

I isolated the problem with following small example:

`using Compat

type Test
a :: Float64
end

type TestCompat
t :: @compat Nullable{Test}
function TestCompat()
tc = new()
tc.t = @compat Nullable{Test}()
return tc
end
end

tc = TestCompat()
@compat get(tc.t)`

In Julia v0.4 without the @compat macro everything works fine (a NullException is thrown) but with the macro I get the following error message:
ERROR: LoadError: BoundsError: attempt to access 2-element Array{Any,1}:
:get
:(tc.t)
at index [3]

[nalimilan]

Argh, looks like the new compatibility for IOContext (#212) didn't consider the one-argument version of get.

@timholy Any ideas?

@BenLauwens Do you really need @compat for get to work on Julia 0.3? As it's a normal function, using Compat should be enough.

[BenLauwens]

I removed the @compat and get works fine on Julia v0.3. The issue can be closed.
Thanks for the quick response!

Ben

[TotalVerb]

@nalimilan: Another reason not to have one-argument get 😉.