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fuzzer error fix

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This commit is contained in:
Danielle Rozenblit 2022-09-12 11:53:37 -07:00
parent a06e953db9
commit a1d89424c2
1 changed files with 15 additions and 15 deletions
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30
lib/decompress/zstd_decompress.c
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@ -2177,24 +2177,24 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
break; break;
} }
case zdss_flush: case zdss_flush:
if (op != NULL) { {
size_t const toFlushSize = zds->outEnd - zds->outStart; size_t const toFlushSize = zds->outEnd - zds->outStart;
size_t const flushedSize = ZSTD_limitCopy(op, (size_t)(oend-op), zds->outBuff + zds->outStart, toFlushSize); size_t const flushedSize = ZSTD_limitCopy(op, (size_t)(oend-op), zds->outBuff + zds->outStart, toFlushSize);
op += flushedSize; op = op ? op + flushedSize : op;
zds->outStart += flushedSize; zds->outStart += flushedSize;
if (flushedSize == toFlushSize) { /* flush completed */ if (flushedSize == toFlushSize) { /* flush completed */
zds->streamStage = zdss_read; zds->streamStage = zdss_read;
if ( (zds->outBuffSize < zds->fParams.frameContentSize) if ( (zds->outBuffSize < zds->fParams.frameContentSize)
&& (zds->outStart + zds->fParams.blockSizeMax > zds->outBuffSize) ) { && (zds->outStart + zds->fParams.blockSizeMax > zds->outBuffSize) ) {
DEBUGLOG(5, "restart filling outBuff from beginning (left:%i, needed:%u)", DEBUGLOG(5, "restart filling outBuff from beginning (left:%i, needed:%u)",
(int)(zds->outBuffSize - zds->outStart), (int)(zds->outBuffSize - zds->outStart),
(U32)zds->fParams.blockSizeMax); (U32)zds->fParams.blockSizeMax);
zds->outStart = zds->outEnd = 0; zds->outStart = zds->outEnd = 0;
} }
break; break;
} } } }
/* cannot complete flush */ /* cannot complete flush */
someMoreWork = 0; someMoreWork = 0;
break; break;