io.h (flush): Add prototype.

	* io/io.h (flush): Add prototype.
	* io/transfer.c (finalize_transfer): Flush partial records.
	* io/unix.c (flush): New function.

From-SVN: r81913

3 files changed, 16 insertions, 1 deletions

diff --git a/libgfortran/io/io.h b/libgfortran/io/io.h
index 99c2b02..1806fb9 100644
--- a/libgfortran/io/io.h
+++ b/libgfortran/io/io.h
@@ -456,6 +456,9 @@ int is_seekable (stream *);
 #define empty_internal_buffer prefix(empty_internal_buffer)
 void empty_internal_buffer(stream *);
 
+#define flush prefix(flush)
+try flush (stream *);
+
 
 /* unit.c */
 
diff --git a/libgfortran/io/transfer.c b/libgfortran/io/transfer.c
index 2440aea..da2e615 100644
--- a/libgfortran/io/transfer.c
+++ b/libgfortran/io/transfer.c
@@ -1338,7 +1338,13 @@ finalize_transfer (void)
       free_fnodes ();
 
       if (advance_status == ADVANCE_NO)
-	return;
+	{
+	  /* Most systems buffer lines, so force the partial record
+	     to be written out.  */
+	  flush (current_unit->s);
+	  return;
+	}
+
       next_record (1);
       current_unit->current_record = 0;
     }
diff --git a/libgfortran/io/unix.c b/libgfortran/io/unix.c
index 3cefd2a..104afb2c 100644
--- a/libgfortran/io/unix.c
+++ b/libgfortran/io/unix.c
@@ -1394,6 +1394,12 @@ is_seekable (stream * s)
   return ((unix_stream *) s)->mmaped;
 }
 
+try
+flush (stream *s)
+{
+  return fd_flush( (unix_stream *) s);
+}
+
 
 /* How files are stored:  This is an operating-system specific issue,
    and therefore belongs here.  There are three cases to consider.