No-arg Ptr constructor.

[malmaud]

Lets you write e.g. Ptr{Cvoid}() as a shorthand for Ptr{Cvoid}(0). Nice for when you're creating a bunch of pointers you're going to pass as references to C libraries to set so you don't care about the initial value.

[maleadt]

Nice for when you're creating a bunch of pointers you're going to pass as references to C libraries to set so you don't care about the initial value.

Isn't that what Ref is for? ie. Ref{T}()

[malmaud]

I wanted to call a C function that sets an array of pointers,

ptrs_out = [Ptr{Cvoid}() for _ in 1:10]
ccall(..., (Ptr{Cvoid},), ptrs_out)

Even if there's a different way of doing that, it still seems to sensible to default pointers to C_NULL, doesn't it?

[ararslan]

Looks like you'll need to rebase on master.

[KristofferC]

@fredrikekre should this have a compat annotation?

[fredrikekre]

Seems like this is causing

WARNING: Method definition (::Type{Ptr{T}})() where {T} in module Compiler at pointer.jl:16 overwritten in module Base at pointer.jl:16.

during sysimg build time.