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[libpng16] Check for __has_extension before using it in pngconf.h, to

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support older Clang versions (Jeremy Sequoia).
This commit is contained in:
Glenn Randers-Pehrson 2014-02-20 06:57:57 -06:00
parent 9c5a1baea5
commit dd6679dce8
3 changed files with 13 additions and 7 deletions
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6
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.6.10beta02 - February 17, 2014
Libpng 1.6.10beta02 - February 20, 2014
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.
@ -55,7 +55,7 @@ Version 1.6.10beta01 [February 9, 2014]
and it adds corresponding code to pngimage.c to handle such options
by not attempting to test them.
Version 1.6.10beta02 [February 17, 2014]
Version 1.6.10beta02 [February 20, 2014]
Moved redefines of png_error(), png_warning(), png_chunk_error(),
and png_chunk_warning() from pngpriv.h to png.h to make them visible
to libpng-calling applications.
@ -70,6 +70,8 @@ Version 1.6.10beta02 [February 17, 2014]
run all the png_handle_*() and depend on them to return if info_ptr == NULL.
This improves the performance of png_read_end(png_ptr, NULL) and makes
it more robust against future programming errors.
Check for __has_extension before using it in pngconf.h, to
support older Clang versions (Jeremy Sequoia).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

4
CHANGES
View File

@ -4829,7 +4829,7 @@ Version 1.6.10beta01 [February 9, 2014]
and it adds corresponding code to pngimage.c to handle such options
by not attempting to test them.
Version 1.6.10beta02 [February 17, 2014]
Version 1.6.10beta02 [February 20, 2014]
Moved redefines of png_error(), png_warning(), png_chunk_error(),
and png_chunk_warning() from pngpriv.h to png.h to make them visible
to libpng-calling applications.
@ -4844,6 +4844,8 @@ Version 1.6.10beta02 [February 17, 2014]
run all the png_handle_*() and depend on them to return if info_ptr == NULL.
This improves the performance of png_read_end(png_ptr, NULL) and makes
it more robust against future programming errors.
Check for __has_extension before using it in pngconf.h, to
support older Clang versions (Jeremy Sequoia).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

10
pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.6.10beta02 - February 9, 2014
* libpng version 1.6.10beta02 - February 20, 2014
*
* Copyright (c) 1998-2013 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -376,9 +376,11 @@
# define PNG_DEPRECATED __attribute__((__deprecated__))
# endif
# if !defined(PNG_PRIVATE)
# if __has_extension(attribute_unavailable_with_message)
# define PNG_PRIVATE __attribute__((__unavailable__(\
"This function is not exported by libpng.")))
# ifdef __has_extension
# if __has_extension(attribute_unavailable_with_message)
# define PNG_PRIVATE __attribute__((__unavailable__(\
"This function is not exported by libpng.")))
# endif
# endif
# endif
# ifndef PNG_RESTRICT