FileException Inconsistency?

[Alex via Digitalmars-d-learn]

Hi,

After too many years of thinking to try D, I'm creating a simple 
directory scanner.  However, I'm already getting some 
"inconistencies" in Exception handling I'm confused by and trying 
to debug.

I'm using Visual D on Windows. DMD 2.110

In the code below, if I leave the writeln(entry.name) or even 
just writeln(".") uncommented, then I get a FileException for 
permission-denied directories as expected.

If I comment these lines out, e.g. to add the entry.name to an 
array, instead I get a Throwable std.file.FileException which is 
not caught as a FileException or Exception.

Is this expected?  How to best handle this?

Thanks

```
module DirScan;

import std.stdio;
import std.file;
import std.algorithm;
import std.array;
import core.thread;

import std.compiler;

int main()
{
    writeln("DirScan\n");
    writefln("Compiler: %s v%d.%03d", name, version_major, 
version_minor);

    string path = "C:\\";

    scan(path);

    writeln("End. Press Enter.");
    readln();
    return 0;
}

void scan(string path)
{
    writeln("-----");
    writeln("PATH: ", path);

    foreach (DirEntry entry; dirEntries(path, SpanMode.shallow))
    {
        try
        {
            writeln(entry.name);
            writeln(".");

            if (entry.isDir)
                scan(entry.name);
        }
        catch (FileException fe) {
            writeln("File Exception: ", fe);
            readln();
            continue;
        }
        catch (Exception e) {
            writeln("Exception: ", e);
            readln();
            continue;
        }
        catch (Throwable t) {
            writeln("Throwable: ", t);
            readln();
            return;
        }
    }
}
```