AuroraMiddleware/zstd
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fixed bus error bug

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This commit is contained in:
Paul Cruz 2017-06-23 11:22:29 -07:00
parent 2e8cc6f12a
commit 4219acc60a
1 changed files with 13 additions and 8 deletions
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21
tests/decodecorpus.c
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@ -672,7 +672,6 @@ static U32 generateSequences(U32* seed, frame_t* frame, seqStore_t* seqStore,
memcpy(srcPtr, literals, literalLen);
srcPtr += literalLen;
do {
if (RAND(seed) & 7) {
/* do a normal offset */
@ -682,14 +681,20 @@ static U32 generateSequences(U32* seed, frame_t* frame, seqStore_t* seqStore,
1;
if (info.useDict && (RAND(seed) & 1)) {
/* need to occasionally generate offsets that go past the start */
U32 const lenPastStart = (RAND(seed) % info.dictContentSize) + 1;
U32 lenPastStart = (RAND(seed) % info.dictContentSize) + 1;
offset = ((BYTE*)srcPtr - (BYTE*)frame->srcStart)+lenPastStart;
if (lenPastStart > frame->header.windowSize) {
matchLen = MIN(matchLen, frame->header.windowSize);
}
if (offset > frame->header.windowSize) {
U32 const matchLenBound = MIN(frame->header.windowSize, lenPastStart);
matchLen = MIN(matchLen, matchLenBound);
if (lenPastStart < MIN_SEQ_LEN) {
/* when offset > windowSize, matchLen bound by end of dictionary (lenPastStart) */
/* this also means that lenPastStart must be greater than MIN_SEQ_LEN */
/* make sure lenPastStart does not go past dictionary start though */
lenPastStart = MIN(lenPastStart+MIN_SEQ_LEN, info.dictContentSize);
offset = ((BYTE*)srcPtr - (BYTE*)frame->srcStart) + lenPastStart;
}
{
U32 const matchLenBound = MIN(frame->header.windowSize, lenPastStart);
matchLen = MIN(matchLen, matchLenBound);
}
}
}
offsetCode = offset + ZSTD_REP_MOVE;
@ -713,7 +718,7 @@ static U32 generateSequences(U32* seed, frame_t* frame, seqStore_t* seqStore,
size_t j;
BYTE* const dictEnd = info.dictContent + info.dictContentSize;
for (j = 0; j < matchLen; j++) {
if ((void*)(srcPtr - offset) < (void*)frame->srcStart) {
if (((BYTE*)srcPtr - (BYTE*)frame->srcStart) < offset) {
/* copy from dictionary instead of literals */
size_t const dictOffset = offset - (srcPtr - (BYTE*)frame->srcStart);
*srcPtr = *(dictEnd - dictOffset);