From: Daniel Kutenin <kutdanila@yandex.ru>
Date: Tue, 10 Jan 2023 15:33:50 +0000 (+0000)
Subject: Fix fuzzing with ZSTD_MULTITHREAD
X-Git-Tag: v1.5.4^2~62
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ac0b913024af5b9adea8e626bd62f951080498e;p=thirdparty%2Fzstd.git

Fix fuzzing with ZSTD_MULTITHREAD

At Google we fuzz zstd without ZSTD_MULTITHREAD but we want inputs to be as much as reproducible. It allows us to test new fuzzing methods for our fuzz team internally and have more horsepower to find bugs
---

diff --git a/tests/fuzz/zstd_helpers.c b/tests/fuzz/zstd_helpers.c
index d5210627e..ef4f05774 100644
--- a/tests/fuzz/zstd_helpers.c
+++ b/tests/fuzz/zstd_helpers.c
@@ -89,12 +89,11 @@ void FUZZ_setRandomParameters(ZSTD_CCtx *cctx, size_t srcSize, FUZZ_dataProducer
     setRand(cctx, ZSTD_c_ldmHashRateLog, ZSTD_LDM_HASHRATELOG_MIN,
             ZSTD_LDM_HASHRATELOG_MAX, producer);
     /* Set misc parameters */
-#ifndef ZSTD_MULTITHREAD
-    setRand(cctx, ZSTD_c_nbWorkers, 0, 0, producer);
-    setRand(cctx, ZSTD_c_rsyncable, 0, 0, producer);
-#else
     setRand(cctx, ZSTD_c_nbWorkers, 0, 2, producer);
     setRand(cctx, ZSTD_c_rsyncable, 0, 1, producer);
+#ifndef ZSTD_MULTITHREAD
+    set(cctx, ZSTD_c_nbWorkers, 0);
+    set(cctx, ZSTD_c_rsyncable, 0);
 #endif
     setRand(cctx, ZSTD_c_useRowMatchFinder, 0, 2, producer);
     setRand(cctx, ZSTD_c_enableDedicatedDictSearch, 0, 1, producer);