This appears to hang up dmd compiler 2.067.1. Changing parallel(s) to s works ok. Is this a known problem?

import std.stdio;
import std.string;
import std.format;
import std.range;
import std.parallelism;

int main(string[] argv)
{

	string s[100000];
	foreach (i, ref si ; parallel(s)){
		si = format("hi:%d",i);
	}

	foreach (ref rm; s[99000..99010]){
		writeln(rm);
	}
    return 0;
}

On 8/7/15 2:19 PM, Jay Norwood wrote:
> This appears to hang up dmd compiler 2.067.1. Changing parallel(s) to s
> works ok. Is this a known problem?
>
> import std.stdio;
> import std.string;
> import std.format;
> import std.range;
> import std.parallelism;
>
> int main(string[] argv)
> {
>
>      string s[100000];
>      foreach (i, ref si ; parallel(s)){
>          si = format("hi:%d",i);
>      }
>
>      foreach (ref rm; s[99000..99010]){
>          writeln(rm);
>      }
>      return 0;
> }
>

When you said "hang up", I didn't understand what you meant.

Now I see, it actually hangs dmd (actually, it's not hung, it is still running as far as I can tell).

If I reduce to 10000, it completes the compile with an error.

I think it has to do with parallel(s).

In fact, this code also hangs:

int main(string[] argv)
{
   string s[100000];
   parallel(s);
}

In order to get what you really do want (no hangs, no errors), use this:

parallel(s[])

I'll file a bug on this.

-Steve

On 8/7/15 2:37 PM, Steven Schveighoffer wrote:

> I'll file a bug on this.

https://issues.dlang.org/show_bug.cgi?id=14886

-Steve

On Friday, 7 August 2015 at 18:51:45 UTC, Steven Schveighoffer wrote:
> On 8/7/15 2:37 PM, Steven Schveighoffer wrote:
>
>> I'll file a bug on this.
>
> https://issues.dlang.org/show_bug.cgi?id=14886
>
> -Steve

Thanks.  The workaround works ok.