From: Yann Collet <yann.collet.73@gmail.com>
Date: Wed, 4 Nov 2015 16:52:18 +0000 (+0100)
Subject: fix bench on /dev/null
X-Git-Tag: zstd-0.3.3^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c7ac7c055c8f12758cd4b72de44993915eae6cf;p=thirdparty%2Fzstd.git

fix bench on /dev/null
---

diff --git a/programs/bench.c b/programs/bench.c
index c19d0fd97..0009e4ae5 100644
--- a/programs/bench.c
+++ b/programs/bench.c
@@ -241,7 +241,7 @@ static size_t local_compress_fast (void* dst, size_t maxDstSize, const void* src
 
 static int BMK_benchMem(void* srcBuffer, size_t srcSize, const char* fileName, int cLevel)
 {
-    const size_t blockSize = g_blockSize ? g_blockSize : srcSize;
+    const size_t blockSize = (g_blockSize ? g_blockSize : srcSize) + (!srcSize);   /* avoid div by 0 */
     const U32 nbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize);
     blockParam_t* const blockTable = (blockParam_t*) malloc(nbBlocks * sizeof(blockParam_t));
     const size_t maxCompressedSize = (size_t)nbBlocks * ZSTD_compressBound(blockSize);