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Check if dict is empty before reading first byte

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This commit is contained in:
Nick Terrell 2016-10-17 11:28:02 -07:00
parent 2b361cf2f1
commit ccfcc643da
8 changed files with 25 additions and 8 deletions
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4
lib/common/entropy_common.c
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@ -168,9 +168,11 @@ size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
{
U32 weightTotal;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
/* memset(huffWeight, 0, hwSize); *//* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) { /* special header */

5
lib/legacy/zstd_v01.c
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@ -958,13 +958,16 @@ static size_t HUF_readDTable (U16* DTable, const void* src, size_t srcSize)
U32 weightTotal;
U32 maxBits;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
U32 n;
U32 nextRankStart;
void* ptr = DTable+1;
HUF_DElt* const dt = (HUF_DElt*)ptr;
if (!srcSize) return (size_t)-FSE_ERROR_srcSize_wrong;
iSize = ip[0];
FSE_STATIC_ASSERT(sizeof(HUF_DElt) == sizeof(U16)); /* if compilation fails here, assertion is false */
//memset(huffWeight, 0, sizeof(huffWeight)); /* should not be necessary, but some analyzer complain ... */
if (iSize >= 128) /* special header */

4
lib/legacy/zstd_v02.c
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@ -1607,10 +1607,12 @@ static size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
U32 weightTotal;
U32 tableLog;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
U32 n;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
//memset(huffWeight, 0, hwSize); /* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) /* special header */

4
lib/legacy/zstd_v03.c
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@ -1604,10 +1604,12 @@ static size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
U32 weightTotal;
U32 tableLog;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
U32 n;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
//memset(huffWeight, 0, hwSize); /* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) /* special header */

4
lib/legacy/zstd_v04.c
View File

@ -1896,10 +1896,12 @@ static size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
U32 weightTotal;
U32 tableLog;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
U32 n;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
//memset(huffWeight, 0, hwSize); /* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) /* special header */

4
lib/legacy/zstd_v05.c
View File

@ -1873,10 +1873,12 @@ static size_t HUFv05_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
U32 weightTotal;
U32 tableLog;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
U32 n;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
//memset(huffWeight, 0, hwSize); /* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) { /* special header */

4
lib/legacy/zstd_v06.c
View File

@ -1932,9 +1932,11 @@ MEM_STATIC size_t HUFv06_readStats(BYTE* huffWeight, size_t hwSize, U32* rankSta
{
U32 weightTotal;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
//memset(huffWeight, 0, hwSize); /* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) { /* special header */

4
lib/legacy/zstd_v07.c
View File

@ -1382,9 +1382,11 @@ size_t HUFv07_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats,
{
U32 weightTotal;
const BYTE* ip = (const BYTE*) src;
size_t iSize = ip[0];
size_t iSize;
size_t oSize;
if (!srcSize) return ERROR(srcSize_wrong);
iSize = ip[0];
//memset(huffWeight, 0, hwSize); /* is not necessary, even though some analyzer complain ... */
if (iSize >= 128) { /* special header */