AuroraMiddleware/lz4
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fixed #560

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it was a fairly complex scenario,
involving source files > 64K
and some extraordinary conditions related to specific layout of ranges of zeroes.
and only on level 9.
This commit is contained in:
Yann Collet 2018-09-04 18:21:40 -07:00
parent 943fa6244a
commit 2e4847c2d5
2 changed files with 5 additions and 1 deletions
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4
lib/lz4hc.c
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@ -327,6 +327,8 @@ LZ4HC_InsertAndGetWiderMatch (
if (lookBackLength==0) { /* no back possible */
size_t const maxML = MIN(currentSegmentLength, srcPatternLength);
if ((size_t)longest < maxML) {
assert(base + matchIndex < ip);
if (ip - (base+matchIndex) > MAX_DISTANCE) break;
assert(maxML < 2 GB);
longest = (int)maxML;
*matchpos = base + matchIndex; /* virtual pos, relative to ip, to retrieve offset */
@ -450,6 +452,8 @@ LZ4_FORCE_INLINE int LZ4HC_encodeSequence (
*op += length;
/* Encode Offset */
assert(*ip > match);
assert( (*ip - match) <= MAX_DISTANCE );
LZ4_writeLE16(*op, (U16)(*ip-match)); *op += 2;
/* Encode MatchLength */

2
programs/bench.c
View File

@ -329,7 +329,7 @@ static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
{ U64 const crcCheck = XXH64(resultBuffer, srcSize, 0);
if (crcOrig!=crcCheck) {
size_t u;
DISPLAY("!!! WARNING !!! %14s : Invalid Checksum : %x != %x \n", displayName, (unsigned)crcOrig, (unsigned)crcCheck);
DISPLAY("\n!!! WARNING !!! %17s : Invalid Checksum : %x != %x \n", displayName, (unsigned)crcOrig, (unsigned)crcCheck);
for (u=0; u<srcSize; u++) {
if (((const BYTE*)srcBuffer)[u] != ((const BYTE*)resultBuffer)[u]) {
U32 segNb, bNb, pos;