writeln() assertion failed in hybrid x64

[hane via Digitalmars-d-learn]

On Thursday, 4 September 2014 at 15:10:22 UTC, Jorge A. S. wrote:
> I'm having an error related to yours: when I call writeln 
> function in a closed stdout I will get a segfault message. 
> Example:
>
> import std.stdio;
>
> void main() {
>   stdout.close();
>   write("hello\n");
> }
>
> The code above will crash with segfault buf the following code 
> will raise an exception instead:
>
> import std.stdio;
>
> void main() {
>   stdout.close();
>   stdout.write("hello\n");
> }
>
> In one of the specializations of the write function in the 
> std.stdio (the call site that you showed in your post) no check 
> for closed stdout (when stdout._p is null) is done. I can't say 
> if this is a bug in the write function or the desired behaviour 
> (I'm a novice here).
>

With DMD of git master, the latter code seems to raise Exception 
(stdio.d(2247): Enforcement failed) instead of segfault.