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fix minor "divide by zero" risk

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Yann Collet 2015-04-16 13:18:15 +01:00
parent 633c1ca810
commit 2ed9dcc900
1 changed files with 2 additions and 1 deletions
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3
programs/lz4io.c
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@ -487,7 +487,8 @@ static int LZ4IO_compressFilename_extRess(cRess_t ress, const char* srcFileName,
size_t cSize = LZ4F_compressFrame(dstBuffer, dstBufferSize, srcBuffer, readSize, &prefs); size_t cSize = LZ4F_compressFrame(dstBuffer, dstBufferSize, srcBuffer, readSize, &prefs);
if (LZ4F_isError(cSize)) EXM_THROW(34, "Compression failed : %s", LZ4F_getErrorName(cSize)); if (LZ4F_isError(cSize)) EXM_THROW(34, "Compression failed : %s", LZ4F_getErrorName(cSize));
compressedfilesize += cSize; compressedfilesize += cSize;
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%% ", (unsigned)(filesize>>20), (double)compressedfilesize/filesize*100); DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%% ",
(unsigned)(filesize>>20), (double)compressedfilesize/(filesize+!filesize)*100); /* avoid division by zero */
/* Write Block */ /* Write Block */
sizeCheck = fwrite(dstBuffer, 1, cSize, dstFile); sizeCheck = fwrite(dstBuffer, 1, cSize, dstFile);