X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FArena.h;h=afb02ac56c786cbb32533e5cd40a0eac06b74526;hb=0181f5b8e87edbb50fbbe06efb8fca203ad535ea;hp=7b7ac911af5fee579b3a4ac89ae5506810c39046;hpb=bda943136e7dee3ad36e368fd81014850b5d6db9;p=ghc-hetmet.git

diff --git a/ghc/rts/Arena.h b/ghc/rts/Arena.h
index 7b7ac91..afb02ac 100644
--- a/ghc/rts/Arena.h
+++ b/ghc/rts/Arena.h
@@ -1,11 +1,11 @@
 /* -----------------------------------------------------------------------------
-   $Id: Arena.h,v 1.1 2001/10/18 14:41:01 simonmar Exp $ 
    (c) The University of Glasgow 2001
 
    Arena allocation interface.
    -------------------------------------------------------------------------- */
 
 #ifndef ARENA_H
+#define ARENA_H
 
 // Abstract type of arenas
 typedef struct _Arena Arena;