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Date: Mon, 8 Jun 2009 14:21:25 +0000 (GMT)
From: Marco Atzeri <marco_atzeri AT yahoo DOT it>
Subject: R: [1.7] output redirection problems with gfortran
To: cygwin AT cygwin DOT com, Gustavo Seabra <gustavo DOT seabra AT gmail DOT com>
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--- Lun 8/6/09, Gustavo Seabra  ha scritto:

> Da: Gustavo Seabra=20
> Oggetto: [1.7] output redirection problems with gfortran
> A: cygwin AT cygwin DOT com
> Data: Luned=EC 8 giugno 2009, 15:28
> Hi All,
>=20
> I'm having a strange problem with gfortran here. I am
> trying to run a
> simple configure program, but it chokes on the fortran
> compilation.
> The test program it uses is very simple:
>=20
> $ cat testp.f
> =A0 =A0 =A0 program testf
> =A0 =A0 =A0 write(6,*) 'testing a Fortran
> program'
> =A0 =A0 =A0 end program testf
>=20
> It is being compiled with:
>=20
> $ gfortran -O0 -fno-second-underscore -o testp testp.f
>=20
> and it generates the executable "testp.exe":
>=20
> $ ./testp
>  testing a Fortran program
>=20
> The problem comes in the testing. If I try to redirect this
> output to
> pretty much anything, I get nothing:
>=20
> $ ./testp | /bin/grep Fortran
> $
>=20
> (It returns nothing.) I also tried changing the compiler
> options to
> remove the -fno-second-underscore or the -O0 options, with
> no changes.
>=20
> The same happens if I try to redirect the output to a file,
> or try to
> tee the output: to a file, i.e., in both cases I only get
> empty files:
> $ ./testp >& testp.out
> $ cat testp.out
> $
>=20
> or
>=20
> $ ./testp 2>&1 | tee testp.out
> $ cat testp.out
> $
>=20
> I attached the output of=A0 cygcheck -s -v -r in this
> message. Here are
> some more details about the gfortran version being used:
>=20
> $ gfortran --version
> GNU Fortran (GCC) 4.3.2 20080827 (beta) 2
[SNIP]

>=20
> Gustavo Seabra

Hi Gustavo,
we already noticed such fault and it is on the "long" list of
Dave Korn to look for.=20

http://thread.gmane.org/gmane.os.cygwin/104875/focus=3D104963

I suspect it is more 1.7 related than gfortran related
as the test program is working on cygwin-1.5.

Regards
Marco





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