From a5fb24aa07bf961023a79b1e947e223d91becd2f Mon Sep 17 00:00:00 2001
From: simonmar <unknown>
Date: Mon, 28 Apr 2003 10:02:15 +0000
Subject: [PATCH] [project @ 2003-04-28 10:02:15 by simonmar] Add a
 compile-time sanity check that RESERVED_STACK_WORDS is
 right.

---
 ghc/includes/StgMacros.h |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ghc/includes/StgMacros.h b/ghc/includes/StgMacros.h
index 8c319d7..2aecd45 100644
--- a/ghc/includes/StgMacros.h
+++ b/ghc/includes/StgMacros.h
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: StgMacros.h,v 1.52 2003/04/28 09:57:12 simonmar Exp $
+ * $Id: StgMacros.h,v 1.53 2003/04/28 10:02:15 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -259,6 +259,13 @@ typedef StgWord StgWordArray[];
 #define RET_DYN_NONPTR_REGS_SIZE 10
 #define ALL_NON_PTRS 0xff
 
+// Sanity check that RESERVED_STACK_WORDS is reasonable.  We can't
+// just derive RESERVED_STACK_WORDS because it's used in Haskell code
+// too.
+#if RESERVED_STACK_WORDS != (3 + RET_DYN_BITMAP_SIZE + RET_DYN_NONPTR_REGS_SIZE)
+#error RESERVED_STACK_WORDS may be wrong!
+#endif
+
 #define LIVENESS_MASK(ptr_regs)  (ALL_NON_PTRS ^ (ptr_regs))
 
 // We can have up to 255 pointers and 255 nonpointers in the stack
-- 
1.7.10.4