commit 840268400dc8fda62a14f8a084e8b1ea46619454
author Bram Moolenaar <Bram@vim.org> Sun Jul 17 20:37:43 2016 +0200
committer Bram Moolenaar <Bram@vim.org> Sun Jul 17 20:37:43 2016 +0200
tree b0e1ff5ffdb4a9cf5862d41f6a1f3e11f27f3ff1
parent e87e6dddc2b2a99572ec0db0833c052214c4fbd3

patch 7.4.2062
Problem:    Using dummy variable to compute struct member offset.
Solution:   Use offsetof().

src/spell.c

diff --git a/src/spell.c b/src/spell.c
index af96891..f6ab0df 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -600,8 +600,7 @@
     char_u	wc_word[1];	    /* word, actually longer */
 } wordcount_T;
 
-static wordcount_T dumwc;
-#define WC_KEY_OFF  (unsigned)(dumwc.wc_word - (char_u *)&dumwc)
+#define WC_KEY_OFF  offsetof(wordcount_T, wc_word)
 #define HI2WC(hi)     ((wordcount_T *)((hi)->hi_key - WC_KEY_OFF))
 #define MAXWORDCOUNT 0xffff