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Beautify the container_of macro

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Use offsetof instead of zero pointer dereference trickery.
This commit is contained in:
Petri Lehtinen 2010-08-12 21:34:02 +03:00
parent 94182a5acc
commit 519d52e2bb
1 changed files with 2 additions and 1 deletions
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3
src/jansson_private.h
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@ -8,11 +8,12 @@
#ifndef JANSSON_PRIVATE_H
#define JANSSON_PRIVATE_H
#include <stddef.h>
#include "jansson.h"
#include "hashtable.h"
#define container_of(ptr_, type_, member_) \
((type_ *)((char *)ptr_ - (size_t)&((type_ *)0)->member_))
((type_ *)((char *)ptr_ - offsetof(type_, member_)))
typedef struct {
json_t json;