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Change gotoDict type to uPtrDiff

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This commit is contained in:
Sean Purcell 2017-03-10 10:34:45 -08:00
parent 8fe5c6862c
commit 784082f49c
1 changed files with 3 additions and 3 deletions
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6
lib/decompress/zstd_decompress.c
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@ -876,7 +876,7 @@ typedef struct {
size_t prevOffset[ZSTD_REP_NUM]; size_t prevOffset[ZSTD_REP_NUM];
const BYTE* base; const BYTE* base;
size_t pos; size_t pos;
iPtrDiff gotoDict; uPtrDiff gotoDict;
} seqState_t; } seqState_t;
@ -1216,7 +1216,7 @@ FORCE_INLINE seq_t ZSTD_decodeSequenceLong_generic(seqState_t* seqState, int con
{ size_t const pos = seqState->pos + seq.litLength; { size_t const pos = seqState->pos + seq.litLength;
seq.match = seqState->base + pos - seq.offset; /* single memory segment */ seq.match = seqState->base + pos - seq.offset; /* single memory segment */
if (seq.offset > pos) seq.match += (uPtrDiff)seqState->gotoDict; /* separate memory segment */ if (seq.offset > pos) seq.match += seqState->gotoDict; /* separate memory segment */
seqState->pos = pos + seq.matchLength; seqState->pos = pos + seq.matchLength;
} }
@ -1356,7 +1356,7 @@ static size_t ZSTD_decompressSequencesLong(
{ U32 i; for (i=0; i<ZSTD_REP_NUM; i++) seqState.prevOffset[i] = dctx->entropy.rep[i]; } { U32 i; for (i=0; i<ZSTD_REP_NUM; i++) seqState.prevOffset[i] = dctx->entropy.rep[i]; }
seqState.base = base; seqState.base = base;
seqState.pos = (size_t)(op-base); seqState.pos = (size_t)(op-base);
seqState.gotoDict = (iPtrDiff)((uPtrDiff)dictEnd - (uPtrDiff)base); /* cast to avoid undefined behaviour */ seqState.gotoDict = (uPtrDiff)dictEnd - (uPtrDiff)base; /* cast to avoid undefined behaviour */
CHECK_E(BIT_initDStream(&seqState.DStream, ip, iend-ip), corruption_detected); CHECK_E(BIT_initDStream(&seqState.DStream, ip, iend-ip), corruption_detected);
FSE_initDState(&seqState.stateLL, &seqState.DStream, dctx->LLTptr); FSE_initDState(&seqState.stateLL, &seqState.DStream, dctx->LLTptr);
FSE_initDState(&seqState.stateOffb, &seqState.DStream, dctx->OFTptr); FSE_initDState(&seqState.stateOffb, &seqState.DStream, dctx->OFTptr);