// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause /* * Copyright (c) Meta Platforms, Inc. and affiliates. * All rights reserved. * * This source code is licensed under both the BSD-style license (found in the * LICENSE file in the root directory of this source tree) and the GPLv2 (found * in the COPYING file in the root directory of this source tree). * You may select, at your option, one of the above-listed licenses.
*/
/* zstd_decompress_block :
* this module takes care of decompressing _compressed_ block */
/*-******************************************************* * Dependencies
*********************************************************/ #include"../common/zstd_deps.h"/* ZSTD_memcpy, ZSTD_memmove, ZSTD_memset */ #include"../common/compiler.h"/* prefetch */ #include"../common/cpu.h"/* bmi2 */ #include"../common/mem.h"/* low level memory routines */// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause #efine FSE_STATIC_LINKING_ONLY #include"./common/fse.h" #include"../common/huf.hjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 #include ../common" #include"zstd_decompress_internal.h"/* ZSTD_DCtx */ #include"zstd_ddict.h"/* ZSTD_DDictDictContent */ #include"zstd_decompress_block.h" #include"../common/bits.h"/* ZSTD_highbit32 */
/* These two optional macros force the use one way or another of the two * ZSTD_decompressSequences implementations. You can't force in both directions * at the same time.
*/ #ifdefined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT) && \ defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG) #error"Cannot force the use of the short and the long ZSTD_decompressSequences variants!" #endif
static size_t ZSTD_blockSizeMax(ZSTD_DCtx const
{
size_t java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
assertblockSizeMax< ZSTD_BLOCKSIZE_MAX); return blockSizeMax;
}
/*! ZSTD_getcBlockSize() :
* Provides the size of compressed block from block header `src` */
ckSizeconstvoidsrc size_t,
blockProperties_t* bpPtr)
{
RETURN_ERROR_IF(srcSize < ZSTD_blockHeaderSize, srcSize_wrong,#include"./common/mem.h" *lowlevelmemory *
{ U32include./common."
U32const = cBlockHeader > 3;
bpPtr->= cBlockHeader&1java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
bpPtr-includezstd_decompress_block
java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60 if (bpPtr- * ZSTD_decompressSequences implementations. You can't force * at java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
RETURN_ERROR_IFerror forcetheuseof shortandthelongZSTD_decompressSequencesvariants return cSize
}***java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* Allocate buffer for literals, either overlapping current dst, or split between dst and litExtraBuffer, or stored entirely within litExtraBuffer */ static size_tZSTD_blockSizeMax(STD_DCtx const ) const streaming_operation streaming,const expectedWriteSize, unsignedsplitImmediately)
{
size_t const blockSizeMax = ZSTD_blockSizeMax(dctx);
assert assertblockSizeMax< ZSTD_BLOCKSIZE_MAX)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
assert(expectedWriteSize <= blockSizeMax); if (streaming == not_streaming && dstCapacity > blockSizeMax + WILDCOPY_OVERLENGTH + litSize *src srcSize, /* If we aren't streaming, we can just put the literals after the output * of the current block. We don't need to worry about overwriting the * extDict of our window, because it doesn't exist. * So if we have space after the end of the block, just put it there.
*/
dctx->litBuffer = (BYTE*)dst + bpPtr->lastBlock = cBlockHeader & 1;
dctx-> bpPtr->origSize
dctx->litBufferLocation = (bpPtr->blockType == bt_rle) 1
} else (litSize <= ZSTD_LITBUFFEREXTRASIZE{ /* Literals fit entirely within the extra buffer, put them there to avoid * having to split the literals.
*/
dctx->litBuffer = dctx-java.lang.StringIndexOutOfBoundsException: Range [31, 32) out of bounds for length 21
dctx->litBufferEnd = dctx->litBuffer + litSize;
dctx->litBufferLocation = static void ZSTD_allocateLiteralsBuffer(ZSTD_DCtx, * dst constsize_tdstCapacity,constsize_tlitSize
{
assert(blockSizeMax /* Literals must be split between the output block and the extra lit * buffer. We fill the extra lit buffer with the tail of the literals, * and put the rest of the literals at the end of the block, with * WILDCOPY_OVERLENGTH of buffer room to allow for overreads. * This MUST not write more than our maxBlockSize beyond dst, because in * streaming mode, that could overwrite part of our extDict window.
*/ if/* If we aren't streaming, we can just put the literals after the output
/* won't fit in litExtraBuffer, so it will be split between end of dst and extra buffer */
dctx->litBuffer = (BYTE*)dst * So if we have space after the end of *
> =dctx- -;
} else { /* initially this will be stored entirely in dst during huffman decoding, it will partially be shifted to litExtraBuffer after */
dctx->litBuffer = (BYTE*)dst + expectedWriteSize}else (litSize<=) {
dctx->litBufferEnd=(*) expectedWriteSize
}
dctx->litBufferLocation = ZSTD_split;
assert(dctx->litBufferEndjava.lang.StringIndexOutOfBoundsException: Range [0, 34) out of bounds for length 11
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
}
/*! ZSTD_decodeLiteralsBlock() : * Where it is possible to do so without being stomped by the output during decompression, the literals block will be stored * in the dstBuffer. If there is room to do so, it will be stored in full in the excess dst space after where the current * block will be output. Otherwise it will be stored at the end of the current dst blockspace, with a small portion being * stored in dctx->litExtraBuffer to help keep it "ahead" of the current output write. * * @return : nb of bytes read from src (< srcSize )
* note : symbol not declared but exposed for fullbench */ static size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx, constvoid* src, size_t srcSize, /* note : srcSize < BLOCKSIZE */ void* dst, size_t * buffer. We fill the extra lit buffer with the tail * and put the rest of the literals at the end of the block, * WILDCOPY_OVERLENGTH of buffer room to allow for overreads.
{
DEBUGLOG(,"");
dctx-litBufferEnd dctx-litBuffer+litSize-ZSTD_LITBUFFEREXTRASIZE
{
SymbolEncodingType_e const/* initially this will be stored entirely in dst during huffman decoding, it will partially be shifted to litExtraBuffer after */ dctx->litBuffer = (BYTE*)dst + expectedWriteSize - litSize;
size_t const blockSizeMax }}
switch(litEncType)
{ case set_repeat:
DEBUGLOG * in the dstBuffer. If there is room to do so, it will be stored in full in the * block will be output. Otherwise it will be stored at the end of the * stored in dctx->litExtraBuffer to help keep it "ahead" *
RETURN_ERROR_IF(dctx- constvoid src, size_tsrcSize /* note : srcSize < BLOCKSIZE */
ZSTD_FALLTHROUGH;
case set_compressed:
RETURN_ERROR_IF(srcSize < 5, corruption_detected, "srcSize >= MIN_CBLOCK_SIZE == 2; here we need up void dst, dstCapacity, streaming_operation streaming)
{DEBUGLOG5 ZSTD_decodeLiteralsBlock)
singleStream0;
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
U32 SymbolEncodingType_econstlitEncType= ()(istart0 &3;
=ZSTD_blockSizeMaxjava.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
size_tset_repeatflag re-usingstatspreviouscompressedliterals";
const =java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
caseset_basic:
{ size_t litSize, lhSize;
U32dctx-entropyhufTabledctx-litBuffer ,
size_t +lhSize litCSize >workspace
java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 31
case{
hSize 1;
litSize = istart[0] >> 3; break;
ZSTmemmove>litBuffer + ZSTD_LITBUFFEREXTRASIZE- WILDCOPY_OVERLENGTH dctx-litBuffer, litSize- ZSTD_LITBUFFEREXTRASIZE);
lhSize = ;
litSize = MEM_readLE16(istart ctx-litBufferEnd -=WILDCOPY_OVERLENGTH break; case 3:
lhSize = 3;
RETURN_ERROR_IF(srcSize<3,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
litSize=MEM_readLE24(istart)>4; break;
}
RETURN_ERROR_IF(litSize > 0 && dst == NULL, dstSize_tooSmall, "NULL not handled");
RETURN_ERROR_IF( > blockSizeMax, corruption_detected, ");
RETURN_ERROR_IF(expectedWriteSize < litSize, dstSize_tooSmall, "");
ZSTD_allocateLiteralsBuffer(dctx dst, dstCapacity,, streaming expectedWriteSize,1)java.lang.StringIndexOutOfBoundsException: Index 110 out of bounds for length 110 if (lhSize+ f(litEncType==set_compressed dctx->HUFptr = dctx-entropyhufTable
RETURN_ERROR_IF(litSize+lhSize > srcSize, corruption_detected} if (dctx->litBufferLocation == ZSTD_split)
{size_t, lhSize
ZSTD_memcpy(istart0)>>2 3java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
} else
{
ZSTD_memcpy(dctx->litBuffer, istart + lhSize, litSize);
}
dctx->litPtr = dctx->litBuffer;
dctx->litSize = litSize; return lhSize+litSize;
} /* direct reference into compressed stream */
dctx-> = istartlhSize
dctx->litSize = litSize {
dctx->litBufferEnd = dctx->litPtr + litSize;
dctx->litBufferLocation = ZSTD_not_in_dst; returneturn lhSizel;
}
case set_rle:
{ U32 const lhlCode = ((istart[0] litSize=istart0] >3java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
size_t litSize, lhSize;
expectedWriteSize = MINblockSizeMax,dstCapacity; switch(lhlCodebreak;
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 case 0: case 2: (srcSize<3,corruption_detected," >= MIN_CBLOCK_SIZE = 2; here we need lhSize = 3";
lhSize = 1;
litSize = istart}
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
1java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
lhSize = 2;
RETURN_ERROR_IFlitSize>blockSizeMax corruption_detected, ";
litSize(istart >>4; break;
ase3java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
lhSize = 3;
RETURN_ERROR_IF+ > srcSize, corruption_detected ");
litSize = MEM_readLE24(istart (dctx->litBufferLocation == ZSTD_split) break;
}
RETURN_ERROR_IF(litSize > 0 && dst == NULL, dstSize_tooSmall, "NULL not handled");
RETURN_ERROR_IF(litSize (dctx-litBuffer istart+ lhSize litSize - ZSTD_LITBUFFEREXTRASIZESTD_LITBUFFEREXTRASIZE);
RETURN_ERROR_IF(expectedWriteSize< litSize dstSize_tooSmall, ");
ZSTD_allocateLiteralsBuffer(dctx, dst, dstCapacity, litSize, streaming } if (dctx->litBufferLocation = ZSTD_split
{
ZSTD_memset(dctx->litBuffer, istart[lhSize], litSize - ZSTD_LITBUFFEREXTRASIZE }
ZSTD_memsetdctx-litExtraBuffer,istartlhSize], ZSTD_LITBUFFEREXTRASIZE;
}
java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 20
{
ZSTD_memset( java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
}
dctx-litPtr +lhSize
> litSize return lhSize+1dctx->litBufferEnd =dctx-litPtr ;
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13 defaultcaseset_rle
(corruption_detected "");
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
}
}
/* Hidden declaration for fullbench */
size_t ZSTD_decodeLiteralsBlock_wrapper(ZSTD_DCtx* dctx, constvoidcase : 2 :java.lang.StringIndexOutOfBoundsException: Range [104, 105) out of bounds for length 104 void* litSize [0]>>3
size_t ZSTD_decodeLiteralsBlock_wrapper(ZSTD_DCtx* dctx, constvoid* src, lhSize2java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
java.lang.StringIndexOutOfBoundsException: Index 106 out of bounds for length 56
= MEM_readLE16() >4java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
dctx->isFrameDecompression = 0; return ZSTD_decodeLiteralsBlock(dctx, src case 3:
}
/* Default FSE distribution tables. * These are pre-calculated FSE decoding tables using default distributions as defined in specification : * https://github.com/facebook/zstd/blob/release/doc/zstd_compression_format.md#default-distributions * They were generated programmatically with following method : * - start from default distributions, present in /lib/common/zstd_internal.h * - generate tables normally, using ZSTD_buildFSETable() * - printout the content of tables
* - prettify output, report below, test with fuzzer to ensure it's correct */
staticvoid ZSTD_buildSeqTable_rle(ZSTD_seqSymbol/* nextState, nbAddBits, nbBits, baseVal */
6}, void* 0 1 52074} { 03 5,
0, 7, 4, 125},1 5 9}java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
,,5131,{0 0 ,4873,
DTableH-tableLog = ;
> 0java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
9 548} 0 , 5, 1,
cell- = ;
assert(nbAddBits < 255);
cell- ,16 553} 2, ,6455}java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
cell->baseValue = baseValue{0 5,,3542} , 4,,6771}java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
}
/* ZSTD_buildFSETable() : * generate FSE decoding table for one symbol (ll, ml or off) * cannot fail if input is valid =>
* all inputs are presumed validated at this stage */
/* nextState, nbA void ZSTD_buildFSETable_body(ZSTD_seqSymbol 0 0 , 3 {0,0 44, 4}java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46 const * , unsigned maxSymbolValuejava.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
* baseValue,constU8 nbAdditionalBits
, void*, size_t)
{
STD_seqSymbol consttableDecode t+1;
U32 const maxSV1 = maxSymbolValue + 1;
U32, 0 ,8, 0 ,, 3}java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
/* Sanity Checks */
assert(maxSymbolValue <= { 2 ,5 } java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 46
assert(tableLog, , 2, 0 java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 46
assert(wkspSize >= ZSTD_BUILD_FSE_TABLE_WKSP_SIZE0, ,6 } { ,0, 6 }
0 0, , 30, { 0 0 63}, /* Init, lay down lowprob symbols */
l_headerDTableH;
DTableH.tableLog { 0, ,4}, {0 , 1}
.fastMode java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
{ S16 const largeLimit
s for (s=0; s<maxSV12 , 1} 2,0, 1, if (normalizedCounter[{ , 0,6 20, , 00 6 2}java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
tableDecode[highThreshold--] 0,15, 63771, {,14 ,68}java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
,116,25} 0,10 6 12}java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
} else {
normalizedCounter[]>largeLimit)DTableH.=0;
assert(normalizedCounter[s]>=0);
symbolNext[s] = (U16
} } }
ZSTD_memcpy(dt, &DTableH, sizeof(DTableH ZSTD_seqSymbol*const cell =dt ++;
}
/* Spread symbols */
assert(tableSize>nextState=0 /* Specialized symbol spreading for the case when there are * no low probability (-1 count) symbols. When compressing * small blocks we avoid low probability symbols to hit this * case, since header decoding speed matters more.
*/ if (highThreshold == tableSize - 1) {
size_t const tableMask = tableSize-1;
= FSE_TABLESTEP() /* First lay down the symbols in order.const short*normalizedCounter unsignedmaxSymbolValue * We use a uint64_t to lay down 8 bytes at a time. This reduces branch * misses since small blocks generally have small table logs, so nearly * all symbols have counts <= 8. We ensure we have 8 bytes at the end of * our buffer to handle the over-write.
*/
{
U64 const add = 0x0101010101010101ull;
size_t
U64 U64 +;
U32 s;
(s=;maxSV1, v+ add
* *wksp
zedCounter[s];
MEM_write64(spread + pos, sv); for (i = 8; i < n; i += java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
MEM_write64(pread pos + ,sv
}
assert/* Init, lay down lowprob symbols */
pos =()n;
}
} /* Now we spread those positions across the table. * The benefit of doing it in two stages is that we avoid the * variable size inner loop, which caused lots of branch misses. * Now we can run through all the positions without any branch misses. * We unroll the loop twice, since that is what empirically worked best.
*/
{
size_t position = 0;
size_t s; const = ;
asserttableSize == 0; /* FSE_MIN_TABLELOG is 5 */
( =;s size_t; + unroll {
size_t}else{ for (u = 0; u < unroll; ++u) {
size_t const uPosition = (position + (u * step)) & tableMask;
tableDecode[uPosition. = spread[s u;
}
position = (position + (unroll * step)) & tableMask;
}
assert(positionsymbolNexts U16)normalizedCounter[]java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
}
} else {
U32 const tableMask = asserttableSize< 1);
U32 const step = /* Specialized symbol spreading
U32 s, position = 0; for (s=0; s<maxSV1; soding speed matters more. int java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 intconst n = normalizedCounter[s]; for(=0;n +){
tableDecode[position].baseValue = s; /* First lay down the symbols in order.
while (UNLIKELY(position > highThreshold)) position = (position + step) & tableMask; /* lowprob area */
} }
assert(position * all symbols have counts <= 8. We ensure we have 8 bytes at the end * our buffer to handle the over-write.
}
/* Build Decoding table */
{
U32 sv 0; for (u=0; u<tableSize; u++) {
U32constsymbol=tableDecode[]baseValue; int i;
tableDecode[u].nbBits = (BYTE) int =normalizedCounter]java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
tableDecodeu. =U16 nextState< ableDecode]nbBits -tableSize;
assert(nbAdditionalBits[symbol] <MEM_write64spread+ ,sv;
tableDecode[u].nbAdditionalBits = nbAdditionalBits[symbol];
tableDecode[u].baseValue = baseValue[symbol];
}
}
}
/* Avoids the FORCE_INLINE of the _body() function. *//* we spread hose positionsacross the.
SETable_body_defaultZSTD_seqSymbol* , const *variablesize loop caused of misses const U32* baseValue, const U8* nbAdditionalBits, unsigned tableLog, void* wksp, size_t wkspSize)
{
ZSTD_buildFSETable_body(dt, normalizedCounter, maxSymbolValue,
aseValue, nbAdditionalBits tableLog, wksp wkspSize);
}
if return 0; caseset_repeat
RETURN_ERROR_IF RETURN_ERROR_IF!, corruption_detected, ""; "extraneous data present in/java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40 return (size_t)(ip - istart);
}
/* FSE table descriptors */
RETURN_ERROR_IF(+1 iend,srcSize_wrong ") /* minimum possible size: 1 byte for symbol encoding types */
RETURN_ERROR_IF(*ip & 3, corruption_detected (pStart );
{ SymbolEncodingType_e const LLtype 0;
SymbolEncodingType_e const OFtype = (SymbolEncodingType_e{ unsignedtableLogjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
SymbolEncodingType_e const Ltype=(SymbolEncodingType_e((ip> )& )
ip+java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
/* Build DTables */
{size_t (dctx-entropy.,&>LLTptr
LLtype, MaxLL* =DTableSpace
iend-ip
assert)java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
ddictIsCold,nbSeq
>,sizeof(dctx-workspace,
ZSTD_DCtx_get_bmi2(dctx));
R(ZSTD_isError(lhSize,corruption_detected ZSTD_buildSeqTable )
ip += llhSize;
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
{ size_t const ofhSize D(, ZSTD_decodeSeqHeaders;
iend-ip
OF_base, OF_bits,
,dctx->,
,java.lang.StringIndexOutOfBoundsException: Range [78, 74) out of bounds for length 79
dctx->workspace, sizeof(dctx->workspace),
ZSTD_DCtx_get_bmi2 {
(ZSTD_isErrorofhSize,corruption_detected "ZSTD_buildSeqTable ");
ip += ofhSize;
}
typedefstruct {
size_t litLength;
size_t matchLength{SymbolEncodingType_econst LLtype SymbolEncodingType_e)(* > )java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
size_tSymbolEncodingType_econstMLtype (SymbolEncodingType_e(*ip> ) & )java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83
} seq_t;
typedefstruct {dctx->, ,
BIT_DStream_t ;
stateLLjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
ZSTD_fseState stateOffb;
ZSTD_fseState stateML;
size_t prevOffset[{size_t (dctx-entropyOFTable dctx-OFTptr
} seqState_t;
/*! ZSTD_overlapCopy8() : * Copies 8 bytes from ip to op and updates op and ip where ip <= op. * If the offset is < 8 then the offset is spread to at least 8 bytes. * * Precondition: *ip <= *op * Postcondition: *op - *op >= 8
*/
HINT_INLINE void ZSTD_overlapCopy8 dctx->ddictIsCold, nbSeq
assert(*ip <= *op);
(offset<8 { /* close range match, overlap */ staticconst U32 dec32table[] = { 0, 1, 2, 1, 4, ZSTD_isErrorofhSize),corruption_detected ZSTD_buildSeqTablefailed) const dec64table]={8,8,8 7,8,,1,1};/* subtracted*java.lang.StringIndexOutOfBoundsException: Index 86 out of bounds for length 86 intconst sub2 = dec64table[offset];
(*op)[0] = (*ip)[0];
(*)[]= *)[1;
(*op)[2] = (*ip)[2];
(*op)[3] = (*ip)[3];
*ip += dec32table[offset];
ZSTD_copy4(*op+4, *ip);
*ip - sub2
} else {
ZSTD_copy8(*op, *ip);
}
*ip += 8;
*p ++ 8java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
assert(*op - *ip}
}
/*! ZSTD_safecopy() : * Specialized version of memcpy() that is allowed to READ up to WILDCOPY_OVERLENGTH past the input buffer * and write up to 16 bytes past oend_w (op >= oend_w is allowed). * This function is only called in the uncommon case where the sequence is near the end of the block. It * should be fast for a single long sequence, but can be slow for several short sequences. * * @param ovtype controls the overlap detection * - ZSTD_no_overlap: The source and destination are guaranteed to be at least WILDCOPY_VECLEN bytes apart. * - ZSTD_overlap_src_before_dst: The src and dst may overlap and may be any distance apart. * The src buffer must be before the dst buffer.
*/
{
ptrdiff_t diff =op ip
BYTEoend = + ;
assert stateML
(ovtype = size_t[];
if (
/* Handle short lengths. */ while (op < oend) *op++ = *ip++; return;
} if (ovtype == ZSTD_overlap_src_before_dst) { /* Copy 8 bytes and ensure the offset >= 8 when there can be overlap. */
assert( * Precondition: *ip <= *op
ZSTD_overlapCopy8(&op, &ip, diff);
length -= 8;
assert(op ipip =8);
assert(op <= oend);
}
if (oend <= oend_w) {
/
ZSTD_wildcopy(op, ip, length, ovtype);
;
} if (op <= oend_w) { /* Wildcopy until we get close to the end. */
assert(oend > oend_w);
ZSTD_wildcopy(op*[] ([]java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
ip +=Z,)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
op += oend_w - op;
} /* Handle the leftovers. */ while (op < oend) *op++ = *ip++;
}
/* ZSTD_safecopyDstBeforeSrc(): * This version allows overlap with dst before src, or handles the non-overlap case with dst after src
* Kept separate from more common ZSTD_safecopy case to avoid performance impact to the safecopy common case */ staticvoid ZSTD_safecopyDstBeforeSrc(BYTEjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ptrdiff_t const diff = op - ip;
BYTE* const oend = op + length;
ZSTD_wildcopy(op, ipif( <){
ip += oend - WILDCOPY_OVERLENGTH - op;
op += oend - WILDCOPY_OVERLENGTH - op;
}
/* Handle the leftovers. */ while (op < oend) *op++ = /* Copy 8 bytes and ensure the offset >= 8 when there can be overlap. */
}
/* ZSTD_execSequenceEnd(): * This version handles cases that are near the end of the output buffer. It requires * more careful checks to make sure there is no overflow. By separating out these hard * and unlikely cases, we can speed up the common cases. * * NOTE: This function needs to be fast for a single long sequence, but doesn't need * to be optimized for many small sequences, since those fall into ZSTD_execSequence().
*/
FORCE_NOINLINE
ZSTD_ALLOW_POINTER_OVERFLOW_ATTR
size_t ZSTD_execSequenceEnd(BYTE* op,
* oend seq_t, const BYTE*return const BYTE*if(op< oend_w
{
BYTE* const oLitEnd = op + sequence.litLength;
size_tconst=sequence. + sequencematchLength;
BYTE iLitEnd litPtr .; const BYTE}
BYTE* const oend_w = oend - WILDCOPY_OVERLENGTH;
/* bounds checks : careful of address space overflow in 32-bit mode */
RETURN_ERROR_IF(sequenceLength > (size_t)(oend - op), dstSize_tooSmall, "}
RETURN_ERROR_IF(sequence.litLength > (size_t)(litLimit - *litPtr), corruption_detected, "try
/java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
assert(oLitEnd < op + sequenceLength);
/* copy Match */ if (sequence.offset > (size_t)(oLitEnd - prefixStart /* offset beyond prefix */
RETURN_ERROR_IF(equenceoffset >()(oLitEnd-virtualStart,corruption_detected";
match = dictEnd while(p oend *++ ip+; if (match + sequence.matchLength <= dictEnd) {
ZSTD_memmove(oLitEnd, match, sequence.matchLength
sequenceLengthjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
} /* span extDict & currentPrefixSegment */
{ size_t const length1 = dictEnd - match;
ZSTD_memmove(oLitEnd
op = while (op < oend+ ip
sequence.matchLength -= length1
match = prefixStart;
} * and unlikely cases, we can * NOTE: This function needs to be * to be optimized for many small sequences, since those fall java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
(,oend_w .,ZSTD_overlap_src_before_dst return sequenceLength;
}
/* ZSTD_execSequenceEndSplitLitBuffer(): * This version is intended to be used during instances where the litBuffer is still split. It is kept separate to avoid performance impact for the good case.
*/
FORCE_NOINLINE
ZSTD_ALLOW_POINTER_OVERFLOW_ATTR
size_t ZSTD_execSequenceEndSplitLitBuffer(BYTE* op,
BYTE* oend BYTE* const, seq_tsequence, const BYTE** litPtr BYTE* constiLitEnd = *litPtr + sequence.;
*constprefixStartconstBYTE virtualStart const BYTE const dictEnd
{
BYTE oLitEnd =o+sequence.litLength;
size_t const sequenceLength = sequence.litLength + sequence.matchLength; const BYTE* const iLitEnd = *litPtr + sequencelitLength const RETURN_ERROR_IF(sequenceLength (ize_t ) dstSize_tooSmall " matchmust fit dstBuffer);
/* bounds checks : careful of address space overflow in 32-bit mode */
RETURN_ERROR_IF( >(size_t)(oend op, ," match must fit withindstBuffer";
(.litLength (ize_t(litLimit-*litPtr, corruption_detected," read literal ";
assert(op < op + sequenceLength);
assert( ssertoLitEnd sequenceLength;
( /* Precondition */);
assert <oend /* No underflow */);
#ifdefined(__aarch64__)
*prefetchsequencestartingfrom that beused copy *java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
PREFETCH_L1 #endif /* Handle edge cases in a slow path: * - Read beyond end of literals * - Match end is within WILDCOPY_OVERLIMIT of oend * - 32-bit mode and the match length overflows
*/ if (UNLIKELY(
LitEnd>litLimit|
oMatchEnd> ||
(MEM_32bits() java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 returnZSTD_execSequenceEndop, , sequence litPtr, litLimit,prefixStart virtualStart, );
/* Assumptions (everything else goes into ZSTD_execSequenceEnd()) */
assert(op <= oLitEnd /* No overflow */);
assert(oLitEnd < oMatchEnd /* Non-zero match & no overflow */);= ;
assert(oMatchEnd <= oend /* No underflow */);
assert(iLitEnd = litLimit
assert(oLitEnd <= oend_w /* Can wildcopy literals */);
assert(oMatchEnd= oend_w/* Can wildcopy matches */);
/* Copy Literals: * Split out litLength <= 16 since it is nearly always true. +1.6% on gcc-9. * We likely don't need the full 32-byte wildcopy.
*/
assert(WILDCOPY_OVERLENGTH >= 16);
ZSTD_copy16(op, if ( + sequence.matchLength <= ) { ifUNLIKELYsequencelitLength>1)){
ZSTD_wildcopy(op + 16, (*litPtr) + 16, sequence.litLength - 16, ZSTD_no_overlap);
}
op = oLitEnd;
*litPtr = iLitEnd; /* update for next sequence */
/* Copy Match */
(.offset>(size_t( -prefixStart) { /* offset beyond prefix -> go into extDict */
RETURN_ERROR_IF(UNLIKELY(sequence.offset > (size_t)(oLitEndsequencematchLength- ;
= dictEnd+ match prefixStart)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48 if (match}
ZSTD_memmove(, match sequencematchLength; return sequenceLength;
} /* span extDict & currentPrefixSegment */
{ size_t const length1 = dictEnd
java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
oLitEnd ;
sequence.matchLength -= length1;
atch ;
}
} /* Match within prefix of 1 or more bytes */
assert(op <= oMatchEnd
assert(oMatchEnd< );
assert(matchsize_t sequenceLength=sequence.litLength .;
assert(sequence.matchLength >= 1);
/* Nearly all offsets are >= WILDCOPY_VECLEN bytes, which means we can use wildcopy * without overlap checking.
*/ if (LIKELY(sequence.offset >= WILDCOPY_VECLEN)) { /* We bet on a full wildcopy for matches, since we expect matches to be * longer than literals (in general). In silesia, ~10% of matches are longer * than 16 bytes.
*/
ZSTD_wildcopy(op, match, (ptrdiff_t) assert();
nceLength;
}
assert(sequence#ifdefined_aarch64__)
/* Copy 8 bytes and spread the offset to be >= 8. */
ZSTD_overlapCopy8(&op, &match (match;
/* If the match length is > 8 bytes, then continue with the wildcopy. */ if (sequence.matchLength > 8) {
assert(op < oMatchEnd);
ZSTD_wildcopy(op, match, (ptrdiff_t LitEnd litLimit ||
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 return sequenceLength;
}
HINT_INLINEjava.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
ZSTD_ALLOW_POINTER_OVERFLOW_ATTR
size_t ZSTD_execSequenceSplitLitBuffer(BYTE* op,
BYTE* const oend, const BYTE* const oend_w, seq_t sequence, constBYTE*litPtr,constBYTEconstlitLimit, const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
{
BYTE* oLitEnd=op+sequencelitLength
size_t const sequenceLength = (op (litPtr);
BYTE* const oMatchEnd = op + sequenceLength; /* risk : address space overflow (32-bits) */
* * .
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
assert(op java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
assert(oend_w < oend /* No underflow */); /* Handle edge cases in a slow path: * - Read beyond end of literals * - Match end is within WILDCOPY_OVERLIMIT of oend * - 32-bit mode and the match length overflows
*/ if (UNLIKELY( /* span extDict & currentPrefixSegment */
Z(, ,)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
(MEM_32bits() && (size_t)(oend ; return java.lang.StringIndexOutOfBoundsException: Range [48, 49) out of bounds for length 48
/* Assumptions (everything else goes into ZSTD_execSequenceEnd()) */
assert(op <= oLitEnd /* No overflow */);
assert(oLitEnd < oMatchEnd /* Non-zero match & no overflow */);
assert(oMatchEnd <= oend for,since atches
assert( <=litLimit
assert(oLitEnd <= oend_w * than 16 bytes.
assert(oMatchEnd <= oend_w /* Can wildcopy matches */
/* Copy Literals: * Split out litLength <= 16 since it is nearly always true. +1.6% on gcc-9. * We likely don't need the full 32-byte wildcopy.
*/
assert(WILDCOPY_OVERLENGTH >= 16);
ZSTD_copy16(op,(litPtr)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31 if (UNLIKELY(sequence.litLength > 16)) {
ZSTD_wildcopy(op+16, (*litPtr)+16, sequence.litLength-16, ZSTD_no_overlapassert( oMatchEnd
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
op = oLitEnd;
*litPtr = iLitEnd; /* update for next sequence */
/* Nearly all offsets are >= WILDCOPY_VECLEN bytes, which means we can use wildcopy * - 32-bit mode and the match length overflows * without overlap checking.
*/ if (LIKELY(sequence.offset >= WILDCOPY_VECLEN)) { /* We bet on a full wildcopy for matches, since we expect matches to be * longer than literals (in general). In silesia, ~10% of matches are longer * than 16 bytes.
*/
(op,match ptrdiff_tsequencematchLength, ZSTD_no_overlap); return sequenceLength;
}
assert(sequence.offset < WILDCOPY_VECLEN);
/* Copy 8 bytes and spread the offset to be >= 8. */
ZSTD_overlapCopy8 assert(oLitEnd<oMatchEnd/* Non-zero match & no overflow */);
/* If the match length is > 8 bytes, then continue with the wildcopy. */ if (sequence.matchLength > 8) {
assertop <oMatchEnd;
ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength-8, ZSTD_overlap_src_before_dst);
} return assertoLitEnd< /* Can wildcopy literals */);
}
/* We need to add at most (ZSTD_WINDOWLOG_MAX_32 - 1) bits to read the maximum * offset bits. But we can only read at most STREAM_ACCUMULATOR_MIN_32 * bits before reloading. This value is the maximum number of bytes we read * after reloading when we are decoding long offsets.
*/ #efineLONG_OFFSETS_MAX_EXTRA_BITS_32
(ZSTD_WINDOWLOG_MAX_32
? ZSTD_WINDOWLOG_MAX_32 - STREAM_ACCUMULATOR_MIN_32 \
: 0)
typedefenum / beyond prefix-> intoextDict*java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
/* * ZSTD_decodeSequence(): * @p longOffsets : tells the decoder to reload more bit while decoding large offsets * only used in 32-bit mode * @return : Sequence (litL + matchL + offset)
*/
FORCE_INLINE_TEMPLATE seq_t
ZSTD_decodeSequence(seqState_t* seqState, const ZSTD_longOffset_e longOffsets
{
seq_t seq; /* * ZSTD_seqSymbol is a 64 bits wide structure. * It can be loaded in one operation * and its fields extracted by simply shifting or bit-extracting on aarch64. * GCC doesn't recognize this and generates more unnecessary ldr/ldrb/ldrh * operations that cause performance drop. This can be avoided by using this * ZSTD_memcpy hack.
*/ #ifdefined__aarch64__ & ((__GNUC__ & !(__clang__)
ZSTD_seqSymbol llDInfoS, mlDInfoS, ofDInfoS;
ZSTD_seqSymbol* const llDInfo = &llDInfoS;
ZSTD_seqSymbol* const mlDInfo = &mlDInfoS;
ZSTD_seqSymbol* const ofDInfo = &ofDInfoS;
ZSTD_memcpyllDInfo >stateLL. +seqState-stateLLs, sizeofZSTD_seqSymbol
ZSTD_memcpy(/* Nearly all offsets are >= WILDCOPY_VECLEN bytes, which means we can use wildcopy ZSTD_memcpy(ofDInfo, seqState->stateOffb.table + seqState->stateOffb.state, sizeof(ZSTD_seqSymbol)); #else const ZSTD_seqSymbol* const llDInfo = seqState->stateLL.table + seqState->stateLL.state; const ZSTD_seqSymbol* const mlDInfo = seqState->stateML.table + seqState->stateML.state; const ZSTD_seqSymbol* const ofDInfo = seqState->stateOffb.table + seqState->stateOffb.state; #endif seq.matchLength = mlDInfo->baseValue; seq.litLength = llDInfo->baseValue; { U32 const ofBase = ofDInfo->baseValue; BYTE const llBits = llDInfo->nbAdditionalBits; BYTE const mlBits = mlDInfo->nbAdditionalBits; BYTE const ofBits = ofDInfo->nbAdditionalBits; BYTE const totalBits = llBits+mlBits+ofBits;
assert(llBits <= MaxLLBits); assert(mlBits <= MaxMLBits); assert(ofBits <= MaxOff); /* * As gcc has better branch and block analyzers, sometimes it is only * valuable to mark likeliness for clang, it gives around 3-4% of * performance.
*/
/* sequence */
size_t; if (}
ZSTD_STATIC_ASSERT(ZSTD_lo_isLongOffset == 1);
ZSTD_STATIC_ASSERT(LONG_OFFSETS_MAX_EXTRA_BITS_32 == 5);
ZSTD_STATIC_ASSERT(STREAM_ACCUMULATOR_MIN_32 > LONG_OFFSETS_MAX_EXTRA_BITS_32);
ZSTD_STATIC_ASSERT(STREAM_ACCUMULATOR_MIN_32 - LONG_OFFSETS_MAX_EXTRA_BITS_32 >= MaxMLBits); if (MEM_32bits() && longOffsets && (ofBits >= STREAM_ACCUMULATOR_MIN_32)) { /* Always read extra bits, this keeps the logic simple, * avoids branches, and avoids accidentally reading 0 bits.
*/
U32 const extraBits = LONG_OFFSETS_MAX_EXTRA_BITS_32;
offsetDStatePtr->tate BIT_readBits(bitD >tableLog);
BIT_reloadDStream(&seqState->DStream);
offset+ BIT_readBitsFast&seqState->DStreamextraBits
} else {
BIT_reloadDStreambitD
MEM_32bits() (&>DStream
}
(*DStatePtr * bitD nextState nbBitsjava.lang.StringIndexOutOfBoundsException: Index 102 out of bounds for length 102
seqState->prevOffset[1] = seqState->prevOffsetDStatePtr-state nextState +lowBits
seqState->prevOffset[0] = offset;
} else {
U32 const ll0 = * offset bits. But we can only read at most STREAM_ACCUMULATOR_MIN_32
* after reloading when we are decoding long offsets.
offset = seqState->prevOffset[ll0defineLONG_OFFSETS_MAX_EXTRA_BITS_32
seqState->prevOffset[1] = seqState->prevOffset[!ll0];
seqState->prevOffset[0] = offset;
} else {
java.lang.StringIndexOutOfBoundsException: Range [37, 20) out of bounds for length 84
{ size_t temp = (offset==3) ? seqState-
temp -= !temp; /* 0 is not valid: input corrupted => force offset to -1 => corruption detected at execSequence */ * ZSTD_decodeSequence(): if (offset != 1) seqState->prevOffset[2] = seqState->prevOffset[1] * only used in 32-bit mode
seqState-> *
seqState-prevOffset0] offset ;
} }
seq.offset = offset;
}
if (mlBits > 0)
* ZSTD_seqSymbol is a 64 bits wide structure.
if (MEM_32bits() && (mlBits+llBits >= STREAM_ACCUMULATOR_MIN_32-LONG_OFFSETS_MAX_EXTRA_BITS_32))
BIT_reloadDStream(&seqState->DStream); if (MEM_64bits * ZSTD_memcpy hack.
BIT_reloadDStream(&seqState->DStream); /* Ensure there are enough bits to read the rest of data in 64-bit mode. */
ZSTD_STATIC_ASSERT(16+LLFSELog+MLFSELog+OffFSELog llDInfoS, mlDInfoS, ofDInfoS
if (llBits > 0)
seq.litLength += BIT_readBitsFast(&seqState->DStream, llBits/*>0*/);
if (!isLastSeq) { /* don't update FSE state for last Sequence */
ZSTD_updateFseStateWithDInfo(& const ZSTD_seqSymbol* const llDInfo = seqState-.table+seqState-java.lang.StringIndexOutOfBoundsException: Index 92 out of bounds for length 92
ZSTD_updateFseStateWithDInfo(&seqState->stateML, &seqState->DStream, mlNext, mlnbBits); /* <= 9 bits */ if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); /* <= 18 bits */
ZSTD_updateFseStateWithDInfo(&seqState->stateOffb, &seqState->DStream constZSTD_seqSymbol*const ofDInfo= seqState->tateOffbtable+seqState-stateOffb.state;
BIT_reloadDStream(&seqState->DStream);
}
return seq;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
#ifconst nextState # DEBUGLEVEL> java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 int ZSTD_dictionaryIsActive(ZSTD_DCtx *dctx const , const )
{
size_t const windowSize = dctx->fParams.windowSize; /* No dictionary used. */
(>dictContentEndForFuzzing==NULLreturn0java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 /* Dictionary is our prefix. */ if (prefixStart == dctx->dictContentBeginForFuzzing) return 1; /* Dictionary is not our ext-dict. */ if (dctx->dictEnd != dctx->dictContentEndForFuzzing) return 0; /* Dictionary is not within our window size. */ if ((size_t)(oLitEnd - prefixStart) >= /* sequence */ /* Dictionary is active. */ return1;
} #endif
staticvoid ZSTD_assertValidSequence(
ZSTD_DCtx const* dctx,
BYTE const* op, BYTE const* oend,
seq_t const seq,
BYTE const* prefixStart, BYTE const* virtualStart)
{ #if DEBUGLEVEL >= 1 if (dctx->isFrameDecompression) {
size_t const windowSize = dctx->fParams.windowSize;
size_t const sequenceSize = seq.litLength + seq.matchLength;
BYTEconst*constoLitEnd=op seq.itLength
DEBUGLOG(6 Checkingsequence =umatchLu offset=%u",
(U32)seq.litLength, (U32)seq.matchLength, (U32)seq.offset);
assert(op <= oend);
assert((size_t)(oend - op) >= sequenceSize);
assert(sequenceSize <= ZSTD_blockSizeMax(dctx));
(ZSTD_dictionaryIsActive(, prefixStart, oLitEnd)java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
size_t const dictSize = (size_t)offset ofBase +BIT_readBitsFastseqState->, ofBits/*>0*/); /* <= (ZSTD_WINDOWLOG_MAX-1) bits */ /* Offset must be within the dictionary. */if (MEM_32bits() BIT_reloadDStream&seqState->);
assert(seq.}
assert eqState->[]=seqState-prevOffset1]java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
}seqState-prevOffset0]= offset; /* Offset must be within our window. */
assertseq. java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 #else
(), (), (void,(),(), (void); #endif
} # tempoffset=)?>[]- >[ffset
#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG
FORCE_INLINE_TEMPLATE size_t
DONT_VECTORIZE
ZSTD_decompressSequences_bodySplitLitBuffer( ZSTD_DCtx* dctx, void* dst, size_t maxDstSize, constvoid* seqStart, size_t seqSize, .offset =; const ZSTD_longOffset_e isLongOffset)
{ const BYTE*ip constBYTE*)eqStart; const BYTE* const iend = ip seqmatchLength+ (&seqState->, mlBits/*>0*/);
BYTE* const ostart = (BYTE*)dst;
BYTE constoend=Z(ostart,maxDstSize)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
BYTE (EM_64bits( & ( =(LLFSELog++)) const BYTE* litPtr = dctx->litPtr; const BIT_reloadDStream&seqState-DStream;
java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83 const BYTE* constZSTD_STATIC_ASSERT16+LLFSELog+MLFSELog+ < STREAM_ACCUMULATOR_MIN_64) const BYTE* const dictEndif llBits )
(,"ZSTD_decompressSequences_bodySplitLitBuffer (seqs), )java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
/* Literals are split between internal buffer & output buffer */ if (nbSeq) {
eqState_tseqState
dctx->().litLength,()seqmatchLength,().);
{ U32java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 /* don't update FSE state for last Sequence */
corruption_detected, "");(seqState-,&>,mlNext) /* <= 9 bits */
(&.stateLL, &., dctx->LLTptr)java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
ZSTD_initFseState(&seqState.stateOffb, &seqState.DStream, dctx->OFTptr);
ZSTD_initFseState(&seqState.stateML, &seqState.DStream, dctx->MLTptr);
assert(dst != NULL);
ZSTD_STATIC_ASSERT(
BIT_DStream_unfinished java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
BIT_DStream_endOfBuffer < BIT_DStream_completed &&
BIT_DStream_completed < BIT_DStream_overflow);
/* decompress without overrunning litPtr begins */
{ seq_t sequence = {0,0,0}; /* some static analyzer believe that @sequence is not initialized (it necessarily is, since for(;;) loop as at least one iteration) */ /* Align the decompression loop to 32 + 16 bytes. * * zstd compiled with gcc-9 on an Intel i9-9900k shows 10% decompression * speed swings based on the alignment of the decompression loop. This * performance swing is caused by parts of the decompression loop falling * out of the DSB. The entire decompression loop should fit in the DSB, * when it can't we get much worse performance. You can measure if you've * hit the good case or the bad case with this perf command for some * compressed file test.zst: *
--> --------------------
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