upstream/mercurial-mirror Files · contrib/python-zstandard/zstd/compress/zstd_opt.h

bitmanipulation: fix undefined behavior in bit shift in getbe32...

bitmanipulation: fix undefined behavior in bit shift in getbe32 OSS-Fuzz caught this in its ubsan mode[0]. I'm not worried about a security issue here because in practice this should work out the way we naively expected, we're just making things explicit to the compiler with the casts. 0: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8876 Differential Revision: https://phab.mercurial-scm.org/D3729

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             zstd_opt.h
        
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        Gregory Szorc
    
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      /*

       * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.

        Gregory Szorc
    
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       * All rights reserved.

       *

        Gregory Szorc
    
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       * This source code is licensed under both the BSD-style license (found in the

       * LICENSE file in the root directory of this source tree) and the GPLv2 (found

       * in the COPYING file in the root directory of this source tree).

       * You may select, at your option, one of the above-listed licenses.

        Gregory Szorc
    
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       */

        Gregory Szorc
    
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      #ifndef ZSTD_OPT_H

      #define ZSTD_OPT_H

        Gregory Szorc
    
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        Gregory Szorc
    
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      #if defined (__cplusplus)

      extern "C" {

      #endif

        Gregory Szorc
    
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        Gregory Szorc
    
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      #include "zstd_compress_internal.h"

        Gregory Szorc
    
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        Gregory Szorc
    
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      void ZSTD_updateTree(

              ZSTD_matchState_t* ms, ZSTD_compressionParameters const* cParams,

              const BYTE* ip, const BYTE* iend);  /* used in ZSTD_loadDictionaryContent() */

        Gregory Szorc
    
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        Gregory Szorc
    
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      size_t ZSTD_compressBlock_btopt(

              ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

              ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);

      size_t ZSTD_compressBlock_btultra(

              ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

              ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);

        Gregory Szorc
    
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        Gregory Szorc
    
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      size_t ZSTD_compressBlock_btopt_extDict(

              ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

              ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);

      size_t ZSTD_compressBlock_btultra_extDict(

              ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

              ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);

        Gregory Szorc
    
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        Gregory Szorc
    
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      #if defined (__cplusplus)

      }

      #endif

        Gregory Szorc
    
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        Gregory Szorc
    
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      #endif /* ZSTD_OPT_H */

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Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	/*
		* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434	* All rights reserved.
		*
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	* This source code is licensed under both the BSD-style license (found in the
		* LICENSE file in the root directory of this source tree) and the GPLv2 (found
		* in the COPYING file in the root directory of this source tree).
		* You may select, at your option, one of the above-listed licenses.
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434	*/

Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	#ifndef ZSTD_OPT_H
		#define ZSTD_OPT_H
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	#if defined (__cplusplus)
		extern "C" {
		#endif
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	#include "zstd_compress_internal.h"
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	void ZSTD_updateTree(
		ZSTD_matchState_t* ms, ZSTD_compressionParameters const* cParams,
		const BYTE* ip, const BYTE* iend); /* used in ZSTD_loadDictionaryContent() */
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	size_t ZSTD_compressBlock_btopt(
		ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
		ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);
		size_t ZSTD_compressBlock_btultra(
		ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
		ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	size_t ZSTD_compressBlock_btopt_extDict(
		ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
		ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);
		size_t ZSTD_compressBlock_btultra_extDict(
		ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
		ZSTD_compressionParameters const* cParams, void const* src, size_t srcSize);
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	#if defined (__cplusplus)
		}
		#endif
Gregory Szorc zstd: vendor zstd 1.1.1...	r30434
Gregory Szorc zstandard: vendor python-zstandard 0.9.0...	r37513	#endif /* ZSTD_OPT_H */