On Wednesday, May 14, 2014 8:26:11 PM UTC-4, Samuel Colvin wrote:
>
> Ok now I'm really confused an I can see why a using Char pointers should
> work, but when i make that change the the julia object being editted (and
> passed back and forth between julia and c) get s messed up: all the strings
> are random characters.
>
Ptr{Char} or Ptr{Int32} both work for me:
s = utf32("Hello")
si = reinterpret(Int32, copy(s.data))
UTF32String(pointer_to_array(pointer(s.data), length(s))),
UTF32String(pointer_to_array(pointer(si), length(s)))
gives ("Hello","Hello").
Maybe the problem is that the Ptr{Char} version is not making a copy of the
data, and C is overwriting or freeing the buffer before you examine the
string?
