ddidderr/zstd-rs
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minor: use MEM_writeLE24()

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so that an empty frame needs only 3 bytes of dstCapacity.
This commit is contained in:
Yann Collet
2024-12-20 10:37:01 -08:00
parent b7a9e69d8d
commit 522adc34eb
1 changed files with 2 additions and 2 deletions
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lib/compress/zstd_compress.c
+2 -2
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@@ -7213,8 +7213,8 @@ ZSTD_compressSequencesAndLiterals_internal(ZSTD_CCtx* cctx,
/* Special case: empty frame */ /* Special case: empty frame */
if ((nbSequences == 1) && (inSeqs[0].litLength == 0)) { if ((nbSequences == 1) && (inSeqs[0].litLength == 0)) {
U32 const cBlockHeader24 = 1 /* last block */ + (((U32)bt_raw)<<1); U32 const cBlockHeader24 = 1 /* last block */ + (((U32)bt_raw)<<1);
RETURN_ERROR_IF(dstCapacity<4, dstSize_tooSmall, "No room for empty frame block header"); RETURN_ERROR_IF(dstCapacity<3, dstSize_tooSmall, "No room for empty frame block header");
MEM_writeLE32(op, cBlockHeader24); MEM_writeLE24(op, cBlockHeader24);
op += ZSTD_blockHeaderSize; op += ZSTD_blockHeaderSize;
dstCapacity -= ZSTD_blockHeaderSize; dstCapacity -= ZSTD_blockHeaderSize;
cSize += ZSTD_blockHeaderSize; cSize += ZSTD_blockHeaderSize;