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bc82959184
Zlib upgrade to version 1.3.1 #25123 Upgrade zlib dependency from 1.3.0 to 1.3.1 - [X] I agree to contribute to the project under Apache 2 License. - [X] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [X] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake Co-authored-by: Misha Klatis <misha.klatis@autodesk.com>
215 lines
6.5 KiB
C
215 lines
6.5 KiB
C
/* gzguts.h -- zlib internal header definitions for gz* operations
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* Copyright (C) 2004-2024 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#ifdef _LARGEFILE64_SOURCE
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# ifndef _LARGEFILE_SOURCE
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# define _LARGEFILE_SOURCE 1
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# endif
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# undef _FILE_OFFSET_BITS
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# undef _TIME_BITS
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#endif
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#ifdef HAVE_HIDDEN
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# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
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#else
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# define ZLIB_INTERNAL
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#endif
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#include <stdio.h>
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#include "zlib.h"
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#ifdef STDC
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# include <string.h>
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# include <stdlib.h>
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# include <limits.h>
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#endif
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#ifndef _POSIX_SOURCE
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# define _POSIX_SOURCE
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#endif
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#include <fcntl.h>
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#ifdef _WIN32
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# include <stddef.h>
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#endif
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#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
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# include <io.h>
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#endif
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#if defined(_WIN32)
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# define WIDECHAR
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#endif
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#ifdef WINAPI_FAMILY
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# define open _open
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# define read _read
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# define write _write
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# define close _close
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#endif
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#ifdef NO_DEFLATE /* for compatibility with old definition */
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# define NO_GZCOMPRESS
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#endif
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#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
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# ifndef HAVE_VSNPRINTF
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# define HAVE_VSNPRINTF
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# endif
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#endif
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#if defined(__CYGWIN__)
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# ifndef HAVE_VSNPRINTF
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# define HAVE_VSNPRINTF
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# endif
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#endif
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#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
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# ifndef HAVE_VSNPRINTF
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# define HAVE_VSNPRINTF
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# endif
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#endif
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#ifndef HAVE_VSNPRINTF
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# ifdef MSDOS
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/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
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but for now we just assume it doesn't. */
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# define NO_vsnprintf
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# endif
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# ifdef __TURBOC__
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# define NO_vsnprintf
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# endif
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# ifdef WIN32
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/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
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# if !defined(vsnprintf) && !defined(NO_vsnprintf)
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# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
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# define vsnprintf _vsnprintf
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# endif
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# endif
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# endif
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# ifdef __SASC
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# define NO_vsnprintf
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# endif
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# ifdef VMS
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# define NO_vsnprintf
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# endif
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# ifdef __OS400__
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# define NO_vsnprintf
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# endif
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# ifdef __MVS__
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# define NO_vsnprintf
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# endif
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#endif
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/* unlike snprintf (which is required in C99), _snprintf does not guarantee
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null termination of the result -- however this is only used in gzlib.c where
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the result is assured to fit in the space provided */
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#if defined(_MSC_VER) && _MSC_VER < 1900
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# define snprintf _snprintf
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#endif
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#ifndef local
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# define local static
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#endif
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/* since "static" is used to mean two completely different things in C, we
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define "local" for the non-static meaning of "static", for readability
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(compile with -Dlocal if your debugger can't find static symbols) */
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/* gz* functions always use library allocation functions */
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#ifndef STDC
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extern voidp malloc(uInt size);
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extern void free(voidpf ptr);
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#endif
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/* get errno and strerror definition */
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#if defined UNDER_CE
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# include <windows.h>
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# define zstrerror() gz_strwinerror((DWORD)GetLastError())
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#else
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# ifndef NO_STRERROR
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# include <errno.h>
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# define zstrerror() strerror(errno)
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# else
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# define zstrerror() "stdio error (consult errno)"
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# endif
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#endif
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/* provide prototypes for these when building zlib without LFS */
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#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
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ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
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ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int);
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ZEXTERN z_off64_t ZEXPORT gztell64(gzFile);
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ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile);
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#endif
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/* default memLevel */
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#if MAX_MEM_LEVEL >= 8
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# define DEF_MEM_LEVEL 8
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#else
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# define DEF_MEM_LEVEL MAX_MEM_LEVEL
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#endif
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/* default i/o buffer size -- double this for output when reading (this and
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twice this must be able to fit in an unsigned type) */
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#define GZBUFSIZE 8192
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/* gzip modes, also provide a little integrity check on the passed structure */
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#define GZ_NONE 0
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#define GZ_READ 7247
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#define GZ_WRITE 31153
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#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
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/* values for gz_state how */
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#define LOOK 0 /* look for a gzip header */
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#define COPY 1 /* copy input directly */
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#define GZIP 2 /* decompress a gzip stream */
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/* internal gzip file state data structure */
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typedef struct {
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/* exposed contents for gzgetc() macro */
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struct gzFile_s x; /* "x" for exposed */
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/* x.have: number of bytes available at x.next */
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/* x.next: next output data to deliver or write */
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/* x.pos: current position in uncompressed data */
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/* used for both reading and writing */
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int mode; /* see gzip modes above */
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int fd; /* file descriptor */
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char *path; /* path or fd for error messages */
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unsigned size; /* buffer size, zero if not allocated yet */
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unsigned want; /* requested buffer size, default is GZBUFSIZE */
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unsigned char *in; /* input buffer (double-sized when writing) */
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unsigned char *out; /* output buffer (double-sized when reading) */
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int direct; /* 0 if processing gzip, 1 if transparent */
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/* just for reading */
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int how; /* 0: get header, 1: copy, 2: decompress */
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z_off64_t start; /* where the gzip data started, for rewinding */
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int eof; /* true if end of input file reached */
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int past; /* true if read requested past end */
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/* just for writing */
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int level; /* compression level */
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int strategy; /* compression strategy */
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int reset; /* true if a reset is pending after a Z_FINISH */
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/* seek request */
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z_off64_t skip; /* amount to skip (already rewound if backwards) */
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int seek; /* true if seek request pending */
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/* error information */
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int err; /* error code */
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char *msg; /* error message */
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/* zlib inflate or deflate stream */
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z_stream strm; /* stream structure in-place (not a pointer) */
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} gz_state;
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typedef gz_state FAR *gz_statep;
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/* shared functions */
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void ZLIB_INTERNAL gz_error(gz_statep, int, const char *);
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#if defined UNDER_CE
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char ZLIB_INTERNAL *gz_strwinerror(DWORD error);
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#endif
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/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
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value -- needed when comparing unsigned to z_off64_t, which is signed
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(possible z_off64_t types off_t, off64_t, and long are all signed) */
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unsigned ZLIB_INTERNAL gz_intmax(void);
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#define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
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