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Use __builtin_offsetof if __GNUC__ >= 4

This commit is contained in:
matt 2011-07-05 05:19:02 +00:00
parent 5e197927a8
commit c28121025f
1 changed files with 5 additions and 1 deletions
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6
usr.bin/genassym/genassym.sh
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@ -1,5 +1,5 @@
#!/bin/sh -
# $NetBSD: genassym.sh,v 1.6 2009/11/28 20:30:01 dsl Exp $
# $NetBSD: genassym.sh,v 1.7 2011/07/05 05:19:02 matt Exp $
#
# Copyright (c) 1997 Matthias Pfaller.
# All rights reserved.
@ -79,7 +79,11 @@ trap "rm -rf $genassym_temp" 0 1 2 3 15
$AWK '
BEGIN {
printf("#if __GNUC__ >= 4\n");
printf("#define offsetof(type, member) __builtin_offsetof(type, member)\n");
printf("#else\n");
printf("#define offsetof(type, member) ((size_t)(&((type *)0)->member))\n");
printf("#endif\n");
defining = 0;
type = "long";
asmtype = "n";