Additional code to make sure and to assert that memory allocations have
8-byte alignment.  Ticket #3777. (CVS 6450)

FossilOrigin-Name: 208382e032134d9c78fe1cfcb98ce9defb4e3e26
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 8fd2c89..4eed255 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.850 2009/04/01 18:03:01 danielk1977 Exp $
+** @(#) $Id: sqliteInt.h,v 1.851 2009/04/05 12:22:09 drh Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -456,6 +456,11 @@
 #define ROUNDDOWN8(x) ((x)&~7)
 
 /*
+** Assert that the pointer X is aligned to an 8-byte boundary.
+*/
+#define EIGHT_BYTE_ALIGNMENT(X)   ((((char*)(X) - (char*)0)&7)==0)
+
+/*
 ** An instance of the following structure is used to store the busy-handler
 ** callback for a given sqlite handle. 
 **