[patch, libfortran] PR32784 CONIN$, CONOUT$, and CONERR$ for Cygwin and mingw

[Jerry DeLisle]

Dave Korn wrote:
> Danny Smith wrote:
> 
>   Pardon me Danny, I'm piggybacking on your reply here but it's mostly
> directed at Jerry.
> 
--- snip ---
>>
>> The program then hangs until I press <Enter> key. 
> 
>   That would be it waiting for input on CONIN$, wouldn't it?

Yes it is waiting for input.

> 
>> The last output to CONOUT is lost.
> 
>> Similar problems occur if I redirect stdout or stderr output.
>>
>> If redirect stdin through a pipe (eg when testing the program from a
>> text editor) I get:
>> Hello, world!
>> This goes to conerr$!
>> At line 9 of file conout.f90 (unit = 49, file = 'CONIN$')
>> Fortran runtime error: Bad file descriptor
> 
>   Jerry, I see you describe it as an extension, but I don't understand what
> this patch is meant to do.  CONIN$/CONOUT$/CONERR$ are not supposed to be the
> same things as stdin/out/err, particularly when redirection is in effect; in
> Win32 terms, they mean "Get me a real console, I want to talk to it no matter
> what".  For instance, if I run this cygwin C testcase in a DOS console:
> 
Its obvious I am not a regular windows user. :)

The closest thing to the concept I had was stdio.  From what you have described 
I should just convert the file name CON???$ to /dev/con??? and it should work. 
Let me give this a try.

And thanks for the clarifications.

Jerry