#ifndef PLUGIN_OFFSETOF_H
#define PLUGIN_OFFSETOF_H

#include <stddef.h> /* defines offsetof to be __builtin_offsetof */

__attribute__((const, noinline))
static size_t __spslr_offsetof(const char *t, const char *m, size_t v) {
	/* never executed; replaced by plugin */
	(void)t; (void)m; (void)v;
	return v;
}

/*
Replace __builtin_offsetof with encoding of type and member that survives C frontend
Macro recursion prevention leaves the inner __builtin_offsetof there, otherwise use "(((size_t)&((T*)0)->M))"
*/
#undef __builtin_offsetof
#define __builtin_offsetof(T,M) \
	((size_t (*)(const char*, const char*, size_t))__spslr_offsetof)((#T), (#M), __builtin_offsetof(T,M))

#endif