[julia-users] How to make an unsafe_string safe?

[Jeffrey Sarnoff]

I have a ccall to a library that returns a C-string `cstr = ccall(__)`.  I 
understand that v0.5/current practice is to do `jstr = unsafe_string(cstr)` 
upon obtaining `cstr`.
The cstr is freed by another ccall.  If I want to use or return that string 
as a Julia String type, do I need to do something more before/after freeing 
the cstr?