This is different from g77 (and to all Unix fortran compilers that I know of). $ cat unit_0.f write (0,*) "hello" end $ rm -f fort.0 $ gfortran unit_0.f $ ./a.out $ cat fort.0 hello $ rm -f fort.0 $ g77 unit_0.f $ ./a.out hello $ cat fort.0 cat: fort.0: No such file or directory
Confirmed.
Created attachment 7904 [details] connect STDERR_FILENO to Unit 0
Subject: Bug 19052 CVSROOT: /cvs/gcc Module name: gcc Changes by: dje@gcc.gnu.org 2005-01-23 00:14:32 Modified files: libgfortran : ChangeLog libgfortran.h libgfortran/io : io.h open.c unit.c unix.c libgfortran/runtime: environ.c Log message: PR libgfortran/19052 * libgfortran.h (options_t): Add stderr_unit. * io/io.h (error_stream): Declare. * io/open.c (new_unit): Do not terminate abnormally if opening file preconnected to stdin, stdout, or stderr. * io/unit.c (init_units): Initialize stderr_unit. * io/unix.c (error_stream): New function. * runtime/environ.c (GFORTRAN_STDERR_UNIT): New environment variable. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/ChangeLog.diff?cvsroot=gcc&r1=1.150&r2=1.151 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/libgfortran.h.diff?cvsroot=gcc&r1=1.21&r2=1.22 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/io/io.h.diff?cvsroot=gcc&r1=1.15&r2=1.16 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/io/open.c.diff?cvsroot=gcc&r1=1.9&r2=1.10 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/io/unit.c.diff?cvsroot=gcc&r1=1.7&r2=1.8 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/io/unix.c.diff?cvsroot=gcc&r1=1.20&r2=1.21 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/libgfortran/runtime/environ.c.diff?cvsroot=gcc&r1=1.6&r2=1.7
Patch committed.