On 08/15/2013 10:03 AM, Colin Grogan wrote:

> I've done this a million times (I thought!) but I'm getting a strange
> error I cant figure out.
>
> The code:
>
> void writeMsg(string msg){
>        logFile.writeln(msg);

What is logFile?

> }
>
> is failing with this error:
>
> object.Exception@std/stdio.d(1321): Enforcement failed
> ----------------
> ./tester(pure @safe bool std.exception.enforce!(bool).enforce(bool, lazy
> const(char)[], immutable(char)[], ulong)+0x6b) [0x49a343]
> ./tester(ref std.stdio.File.LockingTextWriter
> std.stdio.File.LockingTextWriter.__ctor(ref std.stdio.File)+0x59)
> [0x4ce019]

...

> Also, I'm creating the logFile variable as follows:
> File logFile = File(fileName, "w");

That looks like a local variable. How does writeMsg see it?

> If ye need the code around it I'll be glad to post it

It is very helpful if you can reproduce it in a minimal example. The following program works with v2.064-devel-52cc287:

import std.stdio;

enum fileName = "deneme.txt";
File logFile;

static this() {
    logFile = File(fileName, "w");
}

void writeMsg(string msg){
      logFile.writeln(msg);
}

void main()
{
    writeMsg("hello");
    writeMsg("world");
}

Can you add to it and see when the problem appears.

Ali

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