From: Yann Collet <yann.collet.73@gmail.com>
Date: Sun, 3 Apr 2016 23:22:26 +0000 (+0200)
Subject: stronger zbuff synchronization tests
X-Git-Tag: v0.6.0^2~17^2~26
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=15bc943201153630d3272485eb61a4405414a1b3;p=thirdparty%2Fzstd.git

stronger zbuff synchronization tests
---

diff --git a/programs/zbufftest.c b/programs/zbufftest.c
index eba2c1510..8d9401340 100644
--- a/programs/zbufftest.c
+++ b/programs/zbufftest.c
@@ -286,8 +286,15 @@ static int fuzzerTests(U32 seed, U32 nbTests, unsigned startTest, double compres
         if (nbTests >= testNb) DISPLAYUPDATE(2, "/%6u   ", nbTests);
         FUZ_rand(&coreSeed);
         lseed = coreSeed ^ prime1;
+
+        /* random state complete reset */
+        /* some problems only happen when states are re-used in a specific order */
+        if ((FUZ_rand(&lseed) & 0xFF) == 131) { ZBUFF_freeCCtx(zc); zc = ZBUFF_createCCtx(); }
+        if ((FUZ_rand(&lseed) & 0xFF) == 132) { ZBUFF_freeDCtx(zd); zd = ZBUFF_createDCtx(); }
+
+        /* srcBuffer selection */
         buffNb = FUZ_rand(&lseed) & 0x7F;
-        if (buffNb & 7) buffNb=2;   /* select srcBuffer */
+        if (buffNb & 7) buffNb=2;
         else {
             buffNb >>= 3;
             if (buffNb & 7) {