I find `ccall` and especially `@ccall` easy to use, but thankfully haven't spent much time wrapping C libraries so I'd consider myself far from an expert in the

I find `ccall` and especially `@ccall` easy to use, but thankfully haven't spent much time wrapping C libraries so I'd consider myself far from an expert in the matter. Creating mutable structs and `GC.@preserve`ing them is an effective means of getting stack allocated memory, so long as the structs do not escape. E.g., I occasionally follow this approach: mem = Ref{NTuple{32,Float64}}() GC.@preserve mem begin p = Base.unsafe_convert(Ptr{Float64}, mem) # do things with p, e.g. pass it to a C library end