[Bug fortran/20788] New: Loading libgfortran.so clobbers C redirection of stdin

["ripley at stats dot ox dot ac dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

When using a C main program that has in any way loaded libgfortran.so,
redirected C stdin is broken.  This is used by the R project
<http://www.r-project.org> to run scripts, and even occurs even if
the main (C) program has dlopen-ed a DSO with compiled Fortran code
linked against libgfortran.so.

There is separate bug that stops GFORTRAN_STDIN_UNIT being set to a 
negative value to avoid the initialization that causes the problem.

-- 
           Summary: Loading libgfortran.so clobbers C redirection of stdin
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ripley at stats dot ox dot ac dot uk
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20788