re PR libfortran/20179 (cannot mix C and Fortran I/O)

	PR libfortran/20179
	* io/unix.c (fd_close): Add test so that we don't close()
	stdout and stderr.

From-SVN: r100353

libgfortran/ChangeLog

+2005-05-23  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+
+	PR libfortran/20179
+	* io/unix.c (fd_close): Add test so that we don't close()
+	stdout and stderr.
+
 2005-05-29  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 
 	PR libfortran/20006

libgfortran/io/unix.c

@@ -542,8 +542,11 @@ fd_close (unix_stream * s)
   if (s->buffer != NULL && s->buffer != s->small_buffer)
     free_mem (s->buffer);
 
-  if (close (s->fd) < 0)
-    return FAILURE;
+  if (s->fd != STDOUT_FILENO && s->fd != STDERR_FILENO)
+    {
+      if (close (s->fd) < 0)
+        return FAILURE;
+    }
 
   free_mem (s);