GSL.hypergeom error reporting failure due to bytestring on v0.6

[jwscook]

First of all, thanks for GSL.jl! It's great!

Minor problem:

Incorrect inputs to the hypergeometric function 2F1 yielded this:

julia> using GSL
julia> a, b = [1.0, 2.0], 3.0
julia> GSL.hypergeom(a, b, 1.0)
ERROR: UndefVarError: bytestring not defined
Stacktrace:
 [1] custom_error_handler(::Ptr{UInt8}, ::Ptr{UInt8}, ::Int32, ::Int32) at /Users/james/.julia/v0.6/GSL/src/ConvertGSL.jl:18
 [2] hypergeom(::Array{Float64,1}, ::Float64, ::Float64) at /Users/james/.julia/v0.6/GSL/src/7_21_HypergeometricFunctions.jl:21

but after

cd /Users/james/.julia/v0.6/GSL/src/
for i in *; do sed -i 's/bytestring/string/g' "$i"; done

I get a DomainError

julia> GSL.hypergeom(a, b, 1.0)
ERROR: GSL Error: Ptr{Int8} @0x00000001233f4e28 -- Ptr{UInt8} @0x00000001233fd388 at Ptr{UInt8} @0x00000001233fe8cf:685
ERROR: DomainError:
Stacktrace:
 [1] custom_error_handler(::String, ::String, ::Int32, ::Int32) at /Users/james/.julia/v0.6/GSL/src/ConvertGSL.jl:35
 [2] custom_error_handler(::Ptr{UInt8}, ::Ptr{UInt8}, ::Int32, ::Int32) at /Users/james/.julia/v0.6/GSL/src/ConvertGSL.jl:18
 [3] hypergeom(::Array{Float64,1}, ::Float64, ::Float64) at /Users/james/.julia/v0.6/GSL/src/7_21_HypergeometricFunctions.jl:21

[ludvigak]

If you don't want GSL to throw errors you can turn them off: https://www.gnu.org/software/gsl/manual/html_node/Error-Handlers.html

julia> using GSL
julia> a, b = [1.0, 2.0], 3.0;
julia> GSL.set_error_handler_off();
julia> GSL.hypergeom(a, b, 1.0)
NaN