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avoid strict aliasing problems

This commit is contained in:
christos 2012-12-31 18:47:41 +00:00
parent ee8be9493a
commit f5ae1cb28b
1 changed files with 7 additions and 5 deletions
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12
external/bsd/pcc/dist/pcc/arch/amd64/local.c vendored
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@ -1,5 +1,5 @@
/* Id: local.c,v 1.66 2012/03/23 17:03:09 ragge Exp */
/* $NetBSD: local.c,v 1.1.1.4 2012/03/26 14:26:17 plunky Exp $ */
/* $NetBSD: local.c,v 1.2 2012/12/31 18:47:41 christos Exp $ */
/*
* Copyright (c) 2008 Michael Shalayeff
* Copyright (c) 2003 Anders Magnusson (ragge@ludd.luth.se).
@ -540,10 +540,12 @@ myp2tree(NODE *p)
#ifdef mach_amd64
{
/* Do not loose negative zeros */
long long *llp = (long long *)(&p->n_dcon);
short *ssp = (short *)&llp[1];
if (*llp == 0 && *ssp == 0)
/* Do not lose negative zeros */
long long ll[2];
short ss;
memcpy(ll, &p->n_dcon, sizeof(ll));
memcpy(&ss, &ll[1], sizeof(ss));
if (ll[0] == 0 && ss == 0)
return;
}
#else