From: Dmitriy Titarenko <mail.dscheg@gmail.com>
Date: Wed, 23 Aug 2017 10:56:15 +0000 (+0500)
Subject: Fix displayLevel overflow
X-Git-Tag: fuzz-corpora2~46^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20f715d70971e77c892feeaaf8868ea06da9bd42;p=thirdparty%2Fzstd.git

Fix displayLevel overflow
---

diff --git a/lib/dictBuilder/cover.c b/lib/dictBuilder/cover.c
index 117acbf7b..61497846b 100644
--- a/lib/dictBuilder/cover.c
+++ b/lib/dictBuilder/cover.c
@@ -969,7 +969,7 @@ ZDICTLIB_API size_t ZDICT_optimizeTrainFromBuffer_cover(
   /* Initialization */
   COVER_best_init(&best);
   /* Turn down global display level to clean up display at level 2 and below */
-  g_displayLevel = parameters->zParams.notificationLevel - 1;
+  g_displayLevel = displayLevel == 0 ? 0 : displayLevel - 1;
   /* Loop through d first because each new value needs a new context */
   LOCALDISPLAYLEVEL(displayLevel, 2, "Trying %u different sets of parameters\n",
                     kIterations);