• bachmeier (3/3) Feb 20 2018 Someone has posted a question on our subreddit. Would be nice if
• Steven Schveighoffer (4/8) Feb 20 2018 I responded. Looks to me like a race condition in the DMC libc code, but...
• Steven Schveighoffer (7/15) Feb 21 2018 Wow, I didn't realize how bad DMC's FILE * was in terms of thread

bachmeier <no spam.net> writes:

Someone has posted a question on our subreddit. Would be nice if 
he could get an answer:
https://www.reddit.com/r/d_language/comments/7yxwvm/why_do_my_threads_write_to_the_wrong_file/

Steven Schveighoffer <schveiguy yahoo.com> writes:

On 2/20/18 2:00 PM, bachmeier wrote:
 Someone has posted a question on our subreddit. Would be nice if he 
 could get an answer:
 https://www.reddit.com/r/d_language/comments/7yxwvm/why_do_my_threads_writ
_to_the_wrong_file/ 
 

I responded. Looks to me like a race condition in the DMC libc code, but 
I don't have an environment set up to test at the moment.

-Steve

Steven Schveighoffer <schveiguy yahoo.com> writes:

On 2/20/18 2:52 PM, Steven Schveighoffer wrote:
 On 2/20/18 2:00 PM, bachmeier wrote:
 Someone has posted a question on our subreddit. Would be nice if he 
 could get an answer:
 https://www.reddit.com/r/d_language/comments/7yxwvm/why_do_my_threads_writ
_to_the_wrong_file/ 

 
 I responded. Looks to me like a race condition in the DMC libc code, but 
 I don't have an environment set up to test at the moment.

Wow, I didn't realize how bad DMC's FILE * was in terms of thread 
safety: http://bugzilla.digitalmars.com/issues/show_bug.cgi?id=327

I would highly recommend avoiding I/O on Win32, unless you are using 
Visual Studio libc, or using Windows handles directly. I can't believe 
it has been this bad and we haven't had mountains of bug reports on it.

-Steve