Date: Wed, 8 Jul 2015 23:57:59 +0000 (UTC) From: Patrick Kelsey <pkelsey@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r285299 - head/contrib/tcpdump Message-ID: <201507082357.t68Nvx7g033086@repo.freebsd.org>
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Author: pkelsey Date: Wed Jul 8 23:57:58 2015 New Revision: 285299 URL: https://svnweb.freebsd.org/changeset/base/285299 Log: MFV r285292: Merge upstream fix to eliminate build-breaking gcc warnings of no importance. commit: cab33b7a0acba7d2268a23c4383be6167106e549 Update ND_TTEST2 to fix issue 443 Add IS_NOT_NEGATIVE macro. Avoid these warnings: - comparison of unsigned expression >= 0 is always true [-Wtype-limits], - comparison is always true due to limited range of data type [-Wtype-limits]. Reviewed by: adrian Approved by: jmallett (mentor) MFC after: 1 month Modified: head/contrib/tcpdump/netdissect.h Directory Properties: head/contrib/tcpdump/ (props changed) Modified: head/contrib/tcpdump/netdissect.h ============================================================================== --- head/contrib/tcpdump/netdissect.h Wed Jul 8 23:50:04 2015 (r285298) +++ head/contrib/tcpdump/netdissect.h Wed Jul 8 23:57:58 2015 (r285299) @@ -270,8 +270,11 @@ struct netdissect_options { * * http://www.kb.cert.org/vuls/id/162289 */ + +#define IS_NOT_NEGATIVE(x) (((x) > 0) || ((x) == 0)) + #define ND_TTEST2(var, l) \ - ((l) >= 0 && \ + (IS_NOT_NEGATIVE(l) && \ ((uintptr_t)ndo->ndo_snapend - (l) <= (uintptr_t)ndo->ndo_snapend && \ (uintptr_t)&(var) <= (uintptr_t)ndo->ndo_snapend - (l)))
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