ddidderr/zstd-rs
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skip flush operation in case where op is NULL

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This commit is contained in:
Danielle Rozenblit
2022-09-08 13:53:13 -07:00
parent f3ddaaddd6
commit 3d7f9a90df
1 changed files with 5 additions and 4 deletions
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lib/decompress/zstd_decompress.c
+4 -3
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@@ -2177,10 +2177,11 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
break; break;
} }
case zdss_flush: case zdss_flush:
{ size_t const toFlushSize = zds->outEnd - zds->outStart; if (op != NULL) {
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 = op ? op + flushedSize : op; op += flushedSize;
zds->outStart += flushedSize; zds->outStart += flushedSize;
if (flushedSize == toFlushSize) { /* flush completed */ if (flushedSize == toFlushSize) { /* flush completed */
@@ -2193,7 +2194,7 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
zds->outStart = zds->outEnd = 0; zds->outStart = zds->outEnd = 0;
} }
break; break;
} } }}
/* cannot complete flush */ /* cannot complete flush */
someMoreWork = 0; someMoreWork = 0;
break; break;