all OS functions should be "nothrow @trusted @nogc"

[Steven Schveighoffer via Digitalmars-d]

On 7/25/17 11:26 AM, Andrei Alexandrescu wrote:
> 
> About http://man7.org/linux/man-pages/man2/read.2.html, there's just a 
> bit of wrapping necessary:
> 
> nothrow @trusted @nogc
> ssize_t read(int fd, ubyte[] buf)
> {
>      return read(fd, buf.ptr, buf.length);
> }
> 
> (btw void[] doesn't work)
> 
[snip]
> A suite of safe wrappers on OS primitives might be useful.

Great idea! Should it be a package on its own, or should we put the 
wrappers inside the original files?

That is, do we make

core.sys.safe.posix.unistd: read

or do we make

core.sys.posix.unistd: safe_read

?

My preference is for the former, since it's very nice to have a pristine 
copy of the header file.

-Steve