From de1ab01e8ebf04a3503d8450e6b924c7bb160853 Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Fri, 20 Jan 2017 10:17:42 +0000 Subject: Sync zlib sources with GCC, upgrading to 1.2.10. Changes in 1.2.10 (2 Jan 2017) - Avoid warnings on snprintf() return value - Fix bug in deflate_stored() for zero-length input - Fix bug in gzwrite.c that produced corrupt gzip files - Remove files to be installed before copying them in Makefile.in - Add warnings when compiling with assembler code Changes in 1.2.9 (31 Dec 2016) - Fix contrib/minizip to permit unzipping with desktop API [Zouzou] - Improve contrib/blast to return unused bytes - Assure that gzoffset() is correct when appending - Improve compress() and uncompress() to support large lengths - Fix bug in test/example.c where error code not saved - Remedy Coverity warning [Randers-Pehrson] - Improve speed of gzprintf() in transparent mode - Fix inflateInit2() bug when windowBits is 16 or 32 - Change DEBUG macro to ZLIB_DEBUG - Avoid uninitialized access by gzclose_w() - Allow building zlib outside of the source directory - Fix bug that accepted invalid zlib header when windowBits is zero - Fix gzseek() problem on MinGW due to buggy _lseeki64 there - Loop on write() calls in gzwrite.c in case of non-blocking I/O - Add --warn (-w) option to ./configure for more compiler warnings - Reject a window size of 256 bytes if not using the zlib wrapper - Fix bug when level 0 used with Z_HUFFMAN or Z_RLE - Add --debug (-d) option to ./configure to define ZLIB_DEBUG - Fix bugs in creating a very large gzip header - Add uncompress2() function, which returns the input size used - Assure that deflateParams() will not switch functions mid-block - Dramatically speed up deflation for level 0 (storing) - Add gzfread(), duplicating the interface of fread() - Add gzfwrite(), duplicating the interface of fwrite() - Add deflateGetDictionary() function - Use snprintf() for later versions of Microsoft C - Fix *Init macros to use z_ prefix when requested - Replace as400 with os400 for OS/400 support [Monnerat] - Add crc32_z() and adler32_z() functions with size_t lengths - Update Visual Studio project files [AraHaan] --- zlib/gzlib.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) (limited to 'zlib/gzlib.c') diff --git a/zlib/gzlib.c b/zlib/gzlib.c index fae202e..e142ffb 100644 --- a/zlib/gzlib.c +++ b/zlib/gzlib.c @@ -1,11 +1,11 @@ /* gzlib.c -- zlib functions common to reading and writing gzip files - * Copyright (C) 2004, 2010, 2011, 2012, 2013 Mark Adler + * Copyright (C) 2004, 2010, 2011, 2012, 2013, 2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "gzguts.h" -#if defined(_WIN32) && !defined(__BORLANDC__) +#if defined(_WIN32) && !defined(__BORLANDC__) && !defined(__MINGW32__) # define LSEEK _lseeki64 #else #if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 @@ -94,7 +94,7 @@ local gzFile gz_open(path, fd, mode) const char *mode; { gz_statep state; - size_t len; + z_size_t len; int oflag; #ifdef O_CLOEXEC int cloexec = 0; @@ -188,10 +188,10 @@ local gzFile gz_open(path, fd, mode) } /* save the path name for error messages */ -#ifdef _WIN32 +#ifdef WIDECHAR if (fd == -2) { len = wcstombs(NULL, path, 0); - if (len == (size_t)-1) + if (len == (z_size_t)-1) len = 0; } else @@ -202,7 +202,7 @@ local gzFile gz_open(path, fd, mode) free(state); return NULL; } -#ifdef _WIN32 +#ifdef WIDECHAR if (fd == -2) if (len) wcstombs(state->path, path, len + 1); @@ -211,7 +211,7 @@ local gzFile gz_open(path, fd, mode) else #endif #if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(state->path, len + 1, "%s", (const char *)path); + (void)snprintf(state->path, len + 1, "%s", (const char *)path); #else strcpy(state->path, path); #endif @@ -239,7 +239,7 @@ local gzFile gz_open(path, fd, mode) /* open the file with the appropriate flags (or just use fd) */ state->fd = fd > -1 ? fd : ( -#ifdef _WIN32 +#ifdef WIDECHAR fd == -2 ? _wopen(path, oflag, 0666) : #endif open((const char *)path, oflag, 0666)); @@ -248,8 +248,10 @@ local gzFile gz_open(path, fd, mode) free(state); return NULL; } - if (state->mode == GZ_APPEND) + if (state->mode == GZ_APPEND) { + LSEEK(state->fd, 0, SEEK_END); /* so gzoffset() is correct */ state->mode = GZ_WRITE; /* simplify later checks */ + } /* save the current position for rewinding (only if reading) */ if (state->mode == GZ_READ) { @@ -291,7 +293,7 @@ gzFile ZEXPORT gzdopen(fd, mode) if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL) return NULL; #if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(path, 7 + 3 * sizeof(int), "", fd); /* for debugging */ + (void)snprintf(path, 7 + 3 * sizeof(int), "", fd); #else sprintf(path, "", fd); /* for debugging */ #endif @@ -301,7 +303,7 @@ gzFile ZEXPORT gzdopen(fd, mode) } /* -- see zlib.h -- */ -#ifdef _WIN32 +#ifdef WIDECHAR gzFile ZEXPORT gzopen_w(path, mode) const wchar_t *path; const char *mode; @@ -329,6 +331,8 @@ int ZEXPORT gzbuffer(file, size) return -1; /* check and set requested size */ + if ((size << 1) < size) + return -1; /* need to be able to double it */ if (size < 2) size = 2; /* need two bytes to check magic header */ state->want = size; @@ -604,14 +608,13 @@ void ZLIB_INTERNAL gz_error(state, err, msg) return; } #if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(state->msg, strlen(state->path) + strlen(msg) + 3, - "%s%s%s", state->path, ": ", msg); + (void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3, + "%s%s%s", state->path, ": ", msg); #else strcpy(state->msg, state->path); strcat(state->msg, ": "); strcat(state->msg, msg); #endif - return; } #ifndef INT_MAX -- cgit v1.1