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Date: Sun, 10 May 2009 22:19:07 +1000
From: David Billinghurst <dbcygwin AT gmail DOT com>
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Subject: gfortran-4 problem:  stdout is lost when redirected
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I have a problem with cygwin gfortran 4.3.2 20080827 on cygwin-1.7. 
Text written to stdout (unit 6) is lost when redirected.  The problem 
goes away if I add  a "close(6)" statement, so the buffer may not be 
flushed properly.

I don't see the problem with vanilla gcc-4.4.0 or gcc-trunk, compiled 
from source.  These versions still use static libraries, so I am unsure 
if the problem has been fixed, or if it is due to the patches in the 
cygwin version of 4.3.2.

Also, the problem doesn't occur with cygwin-1.5.

$ cat j.f90
write(6,*) 'hello'
end

$ gfortran-4 -o j.exe j.f90

$ ./j
  hello

$ ./j > j.txt

$ cat j.txt

$ cat j-close.f90
write(6,*) 'hello'
close(6)
end

$ gfortran-4 -o j-close.exe j-close.f90

$ ./j-close
  hello

$ ./j-close > j-close.txt

$ cat  j-close.txt
  hello

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