From a738157be0ea0c08564aadf6f59df5f3702ce8ce Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Fri, 16 Mar 2018 23:15:24 +0000
Subject: code maintenance: incorporate use of the __offsetof convenience
 macro.

---
 src/internal/ntapi_impl.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/internal')

diff --git a/src/internal/ntapi_impl.h b/src/internal/ntapi_impl.h
index 4c26f55..791dbc1 100644
--- a/src/internal/ntapi_impl.h
+++ b/src/internal/ntapi_impl.h
@@ -145,7 +145,7 @@ int32_t __ntapi_tt_open_dir_utf8(void ** hfile, void * hat, const char * arg, in
 int __ntapi_ipc_page_alloc(struct dalist_ex * dlist, void ** addr, size_t * alloc_size);
 
 /* debug */
-#define __ntidx(x) (&(((ntapi_vtbl *)0)->x)) / sizeof(size_t)
+#define __ntidx(x) __offsetof(ntapi_vtbl,x) / sizeof(size_t)
 
 
 #endif
-- 
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