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fix zero offset to nullpointer errors

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This commit is contained in:
Danielle Rozenblit 2022-09-07 17:52:26 -07:00
parent fe22e8c538
commit 028842788b
1 changed files with 6 additions and 2 deletions
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8
lib/decompress/zstd_decompress.c
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@ -2059,7 +2059,9 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
if (ZSTD_isError(decompressedSize)) return decompressedSize; if (ZSTD_isError(decompressedSize)) return decompressedSize;
DEBUGLOG(4, "shortcut to single-pass ZSTD_decompress_usingDDict()") DEBUGLOG(4, "shortcut to single-pass ZSTD_decompress_usingDDict()")
ip = istart + cSize; ip = istart + cSize;
op += decompressedSize; if (op) {
op += decompressedSize;
}
zds->expected = 0; zds->expected = 0;
zds->streamStage = zdss_init; zds->streamStage = zdss_init;
someMoreWork = 0; someMoreWork = 0;
@ -2179,7 +2181,9 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
case zdss_flush: case zdss_flush:
{ 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; if (op) {
op += flushedSize;
}
zds->outStart += flushedSize; zds->outStart += flushedSize;
if (flushedSize == toFlushSize) { /* flush completed */ if (flushedSize == toFlushSize) { /* flush completed */
zds->streamStage = zdss_read; zds->streamStage = zdss_read;