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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 2024-12-19 16:11:46 -08:00
parent b7a9e69d8d
commit 522adc34eb
1 changed files with 2 additions and 2 deletions
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4
lib/compress/zstd_compress.c
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@ -7213,8 +7213,8 @@ ZSTD_compressSequencesAndLiterals_internal(ZSTD_CCtx* cctx,
/* Special case: empty frame */
if ((nbSequences == 1) && (inSeqs[0].litLength == 0)) {
U32 const cBlockHeader24 = 1 /* last block */ + (((U32)bt_raw)<<1);
RETURN_ERROR_IF(dstCapacity<4, dstSize_tooSmall, "No room for empty frame block header");
MEM_writeLE32(op, cBlockHeader24);
RETURN_ERROR_IF(dstCapacity<3, dstSize_tooSmall, "No room for empty frame block header");
MEM_writeLE24(op, cBlockHeader24);
op += ZSTD_blockHeaderSize;
dstCapacity -= ZSTD_blockHeaderSize;
cSize += ZSTD_blockHeaderSize;