Potential incorrect type for ptrace requests with musl

[xd009642]

For some reason normal ptrace requests i.e. PTRACE_TRACEME are c_int whereas the ptrace requests related to program registers (i.e. PTRACE_GETREGS) are unsigned integers musl mod.rs. Now as all these values are used as the request argument to fn ptrace surely the sign should be consistent?

musl is also the only libc environment which has the difference in signedness which also doesn't seem to be mimicking musl itself ptrace.h musl

[alexcrichton]

While technically a breaking change to fix this, my guess is that it's fine to fix in a point release as it's unlikely to break anyone.

[xd009642]

I'd only expect it to make a cast unnecessary for some users. I'll submit a pull request later today then unless it's already being covered 👍

[xd009642]

Closing this issue as #745 is merged!