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From: Ed Maste <emaste@FreeBSD.org>
Date: Mon, 4 Nov 2019 22:52:02 +0000 (UTC)
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Subject: svn commit: r354342 - head/lib/libpmc/pmu-events
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Author: emaste
Date: Mon Nov  4 22:52:02 2019
New Revision: 354342
URL: https://svnweb.freebsd.org/changeset/base/354342

Log:
  libpmc: jevents: handle empty descriptoin
  
  PR:		241258
  Reported by:	sigsys @ gmail.com
  Obtained from:	github.com/andikleen/pmu-tools commit bb3c77ed61
  MFC after:	3 days

Modified:
  head/lib/libpmc/pmu-events/jevents.c

Modified: head/lib/libpmc/pmu-events/jevents.c
==============================================================================
--- head/lib/libpmc/pmu-events/jevents.c	Mon Nov  4 21:23:30 2019	(r354341)
+++ head/lib/libpmc/pmu-events/jevents.c	Mon Nov  4 22:52:02 2019	(r354342)
@@ -122,7 +122,7 @@ static void fixdesc(char *s)
 	--e;
 	while (e >= s && isspace(*e))
 		--e;
-	if (*e == '.')
+	if (e >= s && *e == '.')
 		*e = 0;
 }