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[libpng12] Quiet unused variable warnings from clang by porting PNG_UNUSED()

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from libpng-1.4.6.
This commit is contained in:
Glenn Randers-Pehrson 2014-02-03 09:41:50 -06:00
parent 0cbe85bcfd
commit ae48296140
13 changed files with 81 additions and 55 deletions
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40
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.2.51rc02 - January 30, 2014 Libpng 1.2.51rc03 - February 3, 2014
This is not intended to be a public release. It will be replaced This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version. within a few weeks by a public version or by another test version.
@ -9,36 +9,36 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a Source files with LF line endings (for Unix/Linux) and with a
"configure" script "configure" script
libpng-1.2.51rc02.tar.xz (LZMA-compressed, recommended) libpng-1.2.51rc03.tar.xz (LZMA-compressed, recommended)
libpng-1.2.51rc02.tar.gz libpng-1.2.51rc03.tar.gz
libpng-1.2.51rc02.tar.bz2 libpng-1.2.51rc03.tar.bz2
Source files with LF line endings (for Unix/Linux) without the Source files with LF line endings (for Unix/Linux) without the
"configure" script "configure" script
libpng-1.2.51rc02-no-config.tar.xz (LZMA-compressed, recommended) libpng-1.2.51rc03-no-config.tar.xz (LZMA-compressed, recommended)
libpng-1.2.51rc02-no-config.tar.gz libpng-1.2.51rc03-no-config.tar.gz
libpng-1.2.51rc02-no-config.tar.bz2 libpng-1.2.51rc03-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the Source files with CRLF line endings (for Windows), without the
"configure" script "configure" script
lp1251r02.zip lp1251r03.zip
lp1251r02.7z lp1251r03.7z
lp1251r02.tar.bz2 lp1251r03.tar.bz2
Project files Project files
libpng-1.2.51rc02-project-netware.zip libpng-1.2.51rc03-project-netware.zip
libpng-1.2.51rc02-project-wince.zip libpng-1.2.51rc03-project-wince.zip
Other information: Other information:
libpng-1.2.51rc02-README.txt libpng-1.2.51rc03-README.txt
libpng-1.2.51rc02-KNOWNBUGS.txt libpng-1.2.51rc03-KNOWNBUGS.txt
libpng-1.2.51rc02-LICENSE.txt libpng-1.2.51rc03-LICENSE.txt
libpng-1.2.51rc02-Y2K-compliance.txt libpng-1.2.51rc03-Y2K-compliance.txt
libpng-1.2.51rc02-[previous version]-diff.txt libpng-1.2.51rc03-[previous version]-diff.txt
Changes since the last public release (1.2.50): Changes since the last public release (1.2.50):
@ -69,6 +69,12 @@ version 1.2.51rc01 [January 28, 2014]
version 1.2.51rc02 [January 30, 2014] version 1.2.51rc02 [January 30, 2014]
Quiet an uninitialized memory warning from VC2013 in png_get_png(). Quiet an uninitialized memory warning from VC2013 in png_get_png().
version 1.2.51rc03 [February 3, 2014]
Quiet unused variable warnings from clang by porting PNG_UNUSED() from 1.4.6.
version 1.0.61 and 1.2.51 [February 3, 2014]
No changes.
(subscription required; visit (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement https://lists.sourceforge.net/lists/listinfo/png-mng-implement
to subscribe) or to glennrp at users.sourceforge.net to subscribe) or to glennrp at users.sourceforge.net

6
CHANGES
View File

@ -2804,6 +2804,12 @@ version 1.2.51rc01 [January 28, 2014]
version 1.2.51rc02 [January 30, 2014] version 1.2.51rc02 [January 30, 2014]
Quiet an uninitialized memory warning from VC2013 in png_get_png(). Quiet an uninitialized memory warning from VC2013 in png_get_png().
version 1.2.51rc03 [February 3, 2014]
Quiet unused variable warnings from clang by porting PNG_UNUSED() from 1.4.6.
version 1.0.61 and 1.2.51 [February 3, 2014]
No changes.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement https://lists.sourceforge.net/lists/listinfo/png-mng-implement

16
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions /* png.c - location for general purpose libpng functions
* *
* Last changed in libpng 1.2.51 [January 30, 2014] * Last changed in libpng 1.2.51 [February 3, 2014]
* Copyright (c) 1998-2014 Glenn Randers-Pehrson * Copyright (c) 1998-2014 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -17,7 +17,7 @@
#include "png.h" #include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_51rc02 Your_png_h_is_not_version_1_2_51rc02; typedef version_1_2_51rc03 Your_png_h_is_not_version_1_2_51rc03;
/* Version information for C files. This had better match the version /* Version information for C files. This had better match the version
* string defined in png.h. * string defined in png.h.
@ -718,19 +718,19 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
png_charp PNGAPI png_charp PNGAPI
png_get_copyright(png_structp png_ptr) png_get_copyright(png_structp png_ptr)
{ {
png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
#ifdef PNG_STRING_COPYRIGHT #ifdef PNG_STRING_COPYRIGHT
return PNG_STRING_COPYRIGHT return PNG_STRING_COPYRIGHT
#else #else
#ifdef __STDC__ #ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \ return ((png_charp) PNG_STRING_NEWLINE \
"libpng version 1.2.51rc02 - January 30, 2014" PNG_STRING_NEWLINE \ "libpng version 1.2.51rc03 - February 3, 2014" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2014 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \ "Copyright (c) 1998-2014 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE); PNG_STRING_NEWLINE);
#else #else
return ((png_charp) "libpng version 1.2.51rc02 - January 30, 2014\ return ((png_charp) "libpng version 1.2.51rc03 - February 3, 2014\
Copyright (c) 1998-2014 Glenn Randers-Pehrson\ Copyright (c) 1998-2014 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\ Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."); Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@ -750,7 +750,7 @@ png_charp PNGAPI
png_get_libpng_ver(png_structp png_ptr) png_get_libpng_ver(png_structp png_ptr)
{ {
/* Version of *.c files used when building libpng */ /* Version of *.c files used when building libpng */
png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
return ((png_charp) PNG_LIBPNG_VER_STRING); return ((png_charp) PNG_LIBPNG_VER_STRING);
} }
@ -758,7 +758,7 @@ png_charp PNGAPI
png_get_header_ver(png_structp png_ptr) png_get_header_ver(png_structp png_ptr)
{ {
/* Version of *.h files used when building libpng */ /* Version of *.h files used when building libpng */
png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
return ((png_charp) PNG_LIBPNG_VER_STRING); return ((png_charp) PNG_LIBPNG_VER_STRING);
} }
@ -766,7 +766,7 @@ png_charp PNGAPI
png_get_header_version(png_structp png_ptr) png_get_header_version(png_structp png_ptr)
{ {
/* Returns longer string containing both version and date */ /* Returns longer string containing both version and date */
png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
#ifdef __STDC__ #ifdef __STDC__
return ((png_charp) PNG_HEADER_VERSION_STRING return ((png_charp) PNG_HEADER_VERSION_STRING
#ifndef PNG_READ_SUPPORTED #ifndef PNG_READ_SUPPORTED

22
png.h
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@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.2.51rc02 - January 30, 2014 * libpng version 1.2.51rc03 - February 3, 2014
* Copyright (c) 1998-2014 Glenn Randers-Pehrson * Copyright (c) 1998-2014 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -10,7 +10,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.2.51rc02 - January 30, 2014: Glenn * libpng versions 0.97, January 1998, through 1.2.51rc03 - February 3, 2014: Glenn
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
* *
* Note about libpng version numbers: * Note about libpng version numbers:
@ -285,7 +285,9 @@
* 1.0.60 10 10060 10.so.0.60[.0] * 1.0.60 10 10060 10.so.0.60[.0]
* 1.2.50 13 10250 12.so.0.50[.0] * 1.2.50 13 10250 12.so.0.50[.0]
* 1.2.51beta01-05 13 10251 12.so.0.51[.0] * 1.2.51beta01-05 13 10251 12.so.0.51[.0]
* 1.2.51rc01-02 13 10251 12.so.0.51[.0] * 1.2.51rc01-03 13 10251 12.so.0.51[.0]
* 1.0.61 10 10061 10.so.0.61[.0]
* 1.2.51 13 10251 12.so.0.51[.0]
* *
* Henceforth the source version will match the shared-library major * Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be * and minor numbers; the shared-library major version number will be
@ -317,7 +319,7 @@
* *
* This code is released under the libpng license. * This code is released under the libpng license.
* *
* libpng versions 1.2.6, August 15, 2004, through 1.2.51rc02, January 30, 2014, are * libpng versions 1.2.6, August 15, 2004, through 1.2.51rc03, February 3, 2014, are
* Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are * Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5 * distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors: * with the following individual added to the list of Contributing Authors:
@ -429,13 +431,13 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* January 30, 2014 * February 3, 2014
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
* *
* This is your unofficial assurance that libpng from version 0.71 and * This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.2.51rc02 are Y2K compliant. It is my belief that earlier * upward through 1.2.51rc03 are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant. * versions were also Y2K compliant.
* *
* Libpng only has three year fields. One is a 2-byte unsigned integer * Libpng only has three year fields. One is a 2-byte unsigned integer
@ -491,9 +493,9 @@
*/ */
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.2.51rc02" #define PNG_LIBPNG_VER_STRING "1.2.51rc03"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.51rc02 - January 30, 2014\n" " libpng version 1.2.51rc03 - February 3, 2014\n"
#define PNG_LIBPNG_VER_SONUM 0 #define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM 13 #define PNG_LIBPNG_VER_DLLNUM 13
@ -506,7 +508,7 @@
* PNG_LIBPNG_VER_STRING, omitting any leading zero: * PNG_LIBPNG_VER_STRING, omitting any leading zero:
*/ */
#define PNG_LIBPNG_VER_BUILD 02 #define PNG_LIBPNG_VER_BUILD 03
/* Release Status */ /* Release Status */
#define PNG_LIBPNG_BUILD_ALPHA 1 #define PNG_LIBPNG_BUILD_ALPHA 1
@ -1571,7 +1573,7 @@ struct png_struct_def
/* This triggers a compiler error in png.c, if png.c and png.h /* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number. * do not agree upon the version number.
*/ */
typedef png_structp version_1_2_51rc02; typedef png_structp version_1_2_51rc03;
typedef png_struct FAR * FAR * png_structpp; typedef png_struct FAR * FAR * png_structpp;

14
pngconf.h
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@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng version 1.2.51rc02 - January 30, 2014 * libpng version 1.2.51rc03 - February 3, 2014
* Copyright (c) 1998-2013 Glenn Randers-Pehrson * Copyright (c) 1998-2013 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -86,6 +86,18 @@
#endif #endif
/* End of material added at libpng-1.2.19/1.2.21 */ /* End of material added at libpng-1.2.19/1.2.21 */
/* Added at libpng-1.2.51 (ported from 1.4.6) */
#ifndef PNG_UNUSED
/* Unused formal parameter warnings are silenced using the following macro
* which is expected to have no bad effects on performance (optimizing
* compilers will probably remove it entirely). Note that if you replace
* it with something other than whitespace, you must include the terminating
* semicolon.
*/
# define PNG_UNUSED(param) (void)param;
#endif
/* End of material added to libpng-1.4.6 */
/* This is the size of the compression buffer, and thus the size of /* This is the size of the compression buffer, and thus the size of
* an IDAT chunk. Make this whatever size you feel is best for your * an IDAT chunk. Make this whatever size you feel is best for your
* machine. One of these will be allocated per png_struct. When this * machine. One of these will be allocated per png_struct. When this

6
pngerror.c
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@ -300,7 +300,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
/* Here if not setjmp support or if png_ptr is null. */ /* Here if not setjmp support or if png_ptr is null. */
PNG_ABORT(); PNG_ABORT();
#ifndef PNG_CONSOLE_IO_SUPPORTED #ifndef PNG_CONSOLE_IO_SUPPORTED
error_message = error_message; /* Make compiler happy */ PNG_UNUSED(error_message) /* Make compiler happy */
#endif #endif
} }
@ -346,9 +346,9 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
fprintf(stderr, PNG_STRING_NEWLINE); fprintf(stderr, PNG_STRING_NEWLINE);
} }
#else #else
warning_message = warning_message; /* Make compiler happy */ PNG_UNUSED(warning_message) /* Make compiler happy */
#endif #endif
png_ptr = png_ptr; /* Make compiler happy */ PNG_UNUSED(png_ptr) /* Make compiler happy */
} }
#endif /* PNG_WARNINGS_SUPPORTED */ #endif /* PNG_WARNINGS_SUPPORTED */

4
pngget.c
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@ -893,7 +893,7 @@ png_uint_32 PNGAPI
png_get_asm_flagmask (int flag_select) png_get_asm_flagmask (int flag_select)
{ {
/* Obsolete, to be removed from libpng-1.4.0 */ /* Obsolete, to be removed from libpng-1.4.0 */
flag_select=flag_select; PNG_UNUSED(flag_select)
return 0L; return 0L;
} }
@ -903,7 +903,7 @@ png_uint_32 PNGAPI
png_get_mmx_flagmask (int flag_select, int *compilerID) png_get_mmx_flagmask (int flag_select, int *compilerID)
{ {
/* Obsolete, to be removed from libpng-1.4.0 */ /* Obsolete, to be removed from libpng-1.4.0 */
flag_select=flag_select; PNG_UNUSED(flag_select)
*compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */ *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
return 0L; return 0L;
} }

4
pngread.c
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@ -1500,8 +1500,8 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
/* Read rest of file, and get additional chunks in info_ptr - REQUIRED */ /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
png_read_end(png_ptr, info_ptr); png_read_end(png_ptr, info_ptr);
transforms = transforms; /* Quiet compiler warnings */ PNG_UNUSED(transforms) /* Quiet compiler warnings */
params = params; PNG_UNUSED(params);
} }
#endif /* PNG_INFO_IMAGE_SUPPORTED */ #endif /* PNG_INFO_IMAGE_SUPPORTED */

2
pngrtran.c
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@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers /* pngrtran.c - transforms the data in a row for PNG readers
* *
* Last changed in libpng 1.2.51 [January 30, 2014] * Last changed in libpng 1.2.51 [February 3, 2014]
* Copyright (c) 1998-2014 Glenn Randers-Pehrson * Copyright (c) 1998-2014 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)

6
pngrutil.c
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@ -659,7 +659,7 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
} }
png_crc_finish(png_ptr, length); png_crc_finish(png_ptr, length);
info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */ PNG_UNUSED(info_ptr) /* Quiet compiler warnings about unused info_ptr */
} }
#ifdef PNG_READ_gAMA_SUPPORTED #ifdef PNG_READ_gAMA_SUPPORTED
@ -2465,7 +2465,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_crc_finish(png_ptr, skip); png_crc_finish(png_ptr, skip);
#ifndef PNG_READ_USER_CHUNKS_SUPPORTED #ifndef PNG_READ_USER_CHUNKS_SUPPORTED
info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */ PNG_UNUSED(info_ptr) /* Quiet compiler warnings about unused info_ptr */
#endif #endif
} }
@ -2921,7 +2921,7 @@ png_do_read_interlace(png_structp png_ptr)
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width); row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
} }
#ifndef PNG_READ_PACKSWAP_SUPPORTED #ifndef PNG_READ_PACKSWAP_SUPPORTED
transformations = transformations; /* Silence compiler warning */ PNG_UNUSED(transformations) /* Silence compiler warning */
#endif #endif
} }
#endif /* PNG_READ_INTERLACING_SUPPORTED */ #endif /* PNG_READ_INTERLACING_SUPPORTED */

8
pngset.c
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@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct /* pngset.c - storage of image information into info struct
* *
* Last changed in libpng 1.2.51 [January 30, 2014] * Last changed in libpng 1.2.51 [February 3, 2014]
* Copyright (c) 1998-2014 Glenn Randers-Pehrson * Copyright (c) 1998-2014 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -1187,7 +1187,7 @@ png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */ /* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
if (png_ptr != NULL) if (png_ptr != NULL)
png_ptr->asm_flags = 0; png_ptr->asm_flags = 0;
asm_flags = asm_flags; /* Quiet the compiler */ PNG_UNUSED(asm_flags) /* Quiet the compiler */
} }
/* This function was added to libpng 1.2.0 */ /* This function was added to libpng 1.2.0 */
@ -1200,8 +1200,8 @@ png_set_mmx_thresholds (png_structp png_ptr,
if (png_ptr == NULL) if (png_ptr == NULL)
return; return;
/* Quiet the compiler */ /* Quiet the compiler */
mmx_bitdepth_threshold = mmx_bitdepth_threshold; PNG_UNUSED(mmx_bitdepth_threshold)
mmx_rowbytes_threshold = mmx_rowbytes_threshold; PNG_UNUSED(mmx_rowbytes_threshold)
} }
#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */

4
pngtest.c
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@ -382,7 +382,7 @@ static void
pngtest_flush(png_structp png_ptr) pngtest_flush(png_structp png_ptr)
{ {
/* Do nothing; fflush() is said to be just a waste of energy. */ /* Do nothing; fflush() is said to be just a waste of energy. */
png_ptr = png_ptr; /* Stifle compiler warning */ PNG_UNUSED(png_ptr) /* Stifle compiler warning */
} }
#endif #endif
@ -1702,4 +1702,4 @@ main(int argc, char *argv[])
} }
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_51rc02 your_png_h_is_not_version_1_2_51rc02; typedef version_1_2_51rc03 your_png_h_is_not_version_1_2_51rc03;

4
pngwrite.c
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@ -1586,8 +1586,8 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
/* It is REQUIRED to call this to finish writing the rest of the file */ /* It is REQUIRED to call this to finish writing the rest of the file */
png_write_end(png_ptr, info_ptr); png_write_end(png_ptr, info_ptr);
transforms = transforms; /* Quiet compiler warnings */ PNG_UNUSED(transforms) /* Quiet compiler warnings */
params = params; PNG_UNUSED(params)
} }
#endif #endif
#endif /* PNG_WRITE_SUPPORTED */ #endif /* PNG_WRITE_SUPPORTED */