D2 using std.proccess.shell

[Jesse Phillips]

On Tue, 07 Jul 2009 12:04:43 +0200, Lars T. Kyllingstad wrote:

> Jesse Phillips wrote:
>> I don't know if I'm misunderstanding the use of shell() or if this is a
>> bug. Trying to run some programs with shell error with a could not
>> close file. Sadly it I can come to any reasonable conclusion as to why.
>> 
>> Example output from running writeln(shell("gcc")) gcc: no input files
>> std.contracts.ErrnoException: std/stdio.d(336): Could not close file
>> `gcc' (Success)
>> 
>> Note that the program was executed correctly printing the error
>> message, and the appended (Success) massage...? Also shell("gcc -v")
>> works as with proper output and no error.
>> 
>> Similar errors trying to run shell("dmd") unsure if this is related to
>> the programs not being in /bin.
> 
> 
> I think it's a bug in Phobos. Note that you get the exact same result
> even if you remove the enclosing writeln(), which means that the
> program's standard output stream hasn't been intercepted. Although I'm
> unsure about the details, it seems that the std.stdio.File object that
> should encapsulate the program's output stream isn't opened correctly,
> and thus an exception is thrown when an attempt is made to close it.
> 
> Probably you don't get an error for "gcc -v" because the output of this
> command is printed to standard error instead of standard output.
> 
> -Lars

Thanks, I try and narrow down when this happens. I first assumed it was 
because running GCC without anything outputs to stderr and not stdout, 
but that wouldn't explain the DMD issue. ("ggc -v" goes to stdout)