From: Yann Collet <cyan@fb.com>
Date: Sat, 19 Aug 2017 00:06:12 +0000 (-0700)
Subject: blindfix for Windows conversion warning
X-Git-Tag: v1.3.1^2~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f207b39f5597120b37a04b3974d5865bbc239806;p=thirdparty%2Fzstd.git

blindfix for Windows conversion warning

long type is 32-bits on Windows 64,
while it's 64-bits on Unix.
64-to-32 shortening conversion for long is a specific Windows issue.
---

diff --git a/programs/fileio.c b/programs/fileio.c
index 3db6af734..9f9b72fb0 100644
--- a/programs/fileio.c
+++ b/programs/fileio.c
@@ -1038,7 +1038,7 @@ static int getFileInfo(fileInfo_t* info, const char* inFileName){
             /* Skippable frame */
             else if ((magicNumber & 0xFFFFFFF0U) == ZSTD_MAGIC_SKIPPABLE_START) {
                 U32 const frameSize = MEM_readLE32(headerBuffer + 4);
-                long const seek = -numBytesRead + 8 + frameSize;
+                long const seek = (long)(8 + frameSize - numBytesRead);
                 int const ret = LONG_SEEK(srcFile, seek, SEEK_CUR);
                 if (ret != 0) {
                     DISPLAY("Error: could not find end of skippable frame\n");