fix build on arm

[herrernst]

Fix for #5

[mvdnes]

Does this also work with as const *u8? I like to be as explicit as possible when it comes to raw pointer casts.

[herrernst]

You mean as *const u8, don't you? Otherwise, I get "expected identifier, found keyword const".

[mvdnes]

Ah yes, that was what I meant.

[herrernst]

No. It then compiles on ARM, but not on x64 anymore. If you want to be explicit, maybe you can use a std::os::raw::c_char?
I've created another branch where I do it, and then it works on arm and x64. But I warn you, I really don't know what I am doing! ;)

Update - some discussion:
rust-lang/rust#29775
rust-lang/rust#29867
https://users.rust-lang.org/t/rust-cross-compilation-errors-while-native-compilation-is-successful/4008

[herrernst]

Okay, std::os::raw::c_char is most probably the correct type, as it is the type that from_ptr expects. I've opened another pull request with the correct change.