lib/zstd
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fixed : null-length string roundtrip

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This commit is contained in:
Yann Collet
2016-05-10 05:56:09 +02:00
parent 8b23eea694
commit d693117113
2 changed files with 6 additions and 6 deletions
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5
programs/fileio.c
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@@ -535,10 +535,9 @@ unsigned long long FIO_decompressFrame(dRess_t ress,
/* Complete Header loading */
{ size_t const toLoad = ZSTD_frameHeaderSize_max - alreadyLoaded; /* assumption : alreadyLoaded <= ZSTD_frameHeaderSize_max */
size_t const checkSize = fread(((char*)ress.srcBuffer) + alreadyLoaded, 1, toLoad, finput);
if (checkSize != toLoad) EXM_THROW(32, "Read error"); /* assumption : srcSize >= ZSTD_frameHeaderSize_max */
size_t const loadedSize = fread(((char*)ress.srcBuffer) + alreadyLoaded, 1, toLoad, finput); /* can be <= toLoad (null string) */
readSize = alreadyLoaded + loadedSize;
}
readSize = ZSTD_frameHeaderSize_max;
/* Main decompression Loop */
while (1) {

7
programs/playTests.sh
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@@ -29,10 +29,11 @@ $ZSTD -f tmp # trivial compression case, creates tmp
$ZSTD -df tmp.zst # trivial decompression case (overwrites tmp)
echo "test : too large compression level (must fail)"
$ZSTD -99 tmp && die "too large compression level undetected"
echo "test : compress null-length file"
echo "test : compress to stdout"
$ZSTD tmp -c > tmpCompressed
$ZSTD tmp --stdout > tmpCompressed # long command format
echo "test : null-length file roundtrip"
echo -n '' | $ZSTD - --stdout | $ZSTD -d --stdout
$ZSTD tmp -c > tmpCompressed # compression using stdout
$ZSTD tmp --stdout > tmpCompressed # compressoin using stdout, long format
echo "test : decompress file with wrong suffix (must fail)"
$ZSTD -d tmpCompressed && die "wrong suffix error not detected!"
$ZSTD -d tmpCompressed -c > tmpResult # decompression using stdout