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
2019-11-04 22:52:02 +00:00 · 2019-11-04 22:52:02 +00:00 · 6a2a926d5f
commit 6a2a926d5f
parent d4f55cc861
1 changed files with 1 additions and 1 deletions
--- a/lib/libpmc/pmu-events/jevents.c
+++ b/lib/libpmc/pmu-events/jevents.c
@ -122,7 +122,7 @@ static void fixdesc(char *s)
 	--e;
 	while (e >= s && isspace(*e))
 		--e;
-	if (*e == '.')
+	if (e >= s && *e == '.')
 		*e = 0;
 }