From: teodor <teodor>
Date: Thu, 21 Jan 2010 14:09:19 +0000 (+0000)
Subject: use offset instead of manually calculated header size
X-Git-Url: http://sigaev.ru/git/gitweb.cgi?a=commitdiff_plain;h=e8eed69019a2d7c048a9a7ed2bf4e1739678cb93;hp=7282b0cafacea9d23bfe67f3650f7b89ac7851cb;p=tedtools.git

use offset instead of manually calculated header size
---

diff --git a/tmalloc.h b/tmalloc.h
index 4cb0a0b..cc10c33 100644
--- a/tmalloc.h
+++ b/tmalloc.h
@@ -72,7 +72,7 @@ typedef struct {
 	char	data[1];	
 } MCAllocatedSpace;
 
-#define MCASHDRSZ ( sizeof(size_t) + sizeof(MemoryContext*) )
+#define MCASHDRSZ offsetof(MCAllocatedSpace, data)
 #define MCMAGICKNUMBER	(0xFE0FBEEF)
 
 MemoryContext *allocMemoryContext(MemoryContext* parent, int flags);