Re: iteration over directories is unsafe

[bauss via Digitalmars-d-learn]

On Saturday, 5 February 2022 at 23:26:21 UTC, forkit wrote:
It is not possible to do a simple iteration over directories in 
@safe mode.

Really? I have to resort to unsafe??


//----

module test;
@safe: // nope. no can do.

import std;

void main()
{
    auto dFiles = dirEntries("", "*.{d,di}", SpanMode.depth);
    foreach(d; dFiles)
        writeln(d.name);
}

//----

Well it can't be "truly" safe since it requires a call to the 
system to retrieve the directory entries.

While yeah, from common sense it's most likely safe from the 
perspective of a user, then it's not true safety as there are no 
safety guarantees as it's an external call.

I would argue that D should move towards marking certain system 
functions as trusted.