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Merge branch 'libpng17' into libpng17-filter-selection

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This commit is contained in:
John Bowler 2015-12-17 20:06:48 -08:00
commit 69ff249bc4
3 changed files with 18 additions and 4 deletions
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11
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.7.0beta74 - December 15, 2015
Libpng 1.7.0beta74 - December 18, 2015
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.
@ -1092,7 +1092,7 @@ Version 1.7.0beta73 [December 11, 2015]
Changed png_struct->options from png_byte to png_uint_32, to hold
up to 16 2-bit options.
Version 1.7.0beta74 [December 15, 2015]
Version 1.7.0beta74 [December 18, 2015]
Fixed copyright years in source files.
Removed LE/BE dependencies in pngvalid, to 'fix' the current problem
in the BigEndian tests by not testing it, making the BE code the same
@ -1104,6 +1104,13 @@ Version 1.7.0beta74 [December 15, 2015]
the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error
checks) and changed the check to only operate in non-release builds
(base build type not RC or RELEASE.)
Fixed undefined behavior in pngvalid.c, undefined because
(png_byte) << shift is undefined if it changes the signed bit
(because png_byte is promoted to int). The libpng exported functions
png_get_uint_32 and png_get_uint_16 handle this. (Bug reported by
David Drysdale as a result of reports from UBSAN in clang 3.8).
This changes pngvalid to use BE random numbers; this used to produce
errors but these should not be fixed as a result of the previous changes.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

9
CHANGES
View File

@ -5391,7 +5391,7 @@ Version 1.7.0beta73 [December 11, 2015]
Changed png_struct->options from png_byte to png_uint_32, to hold
up to 16 2-bit options.
Version 1.7.0beta74 [December 15, 2015]
Version 1.7.0beta74 [December 18, 2015]
Fixed copyright years in source files.
Removed LE/BE dependencies in pngvalid, to 'fix' the current problem
in the BigEndian tests by not testing it, making the BE code the same
@ -5403,6 +5403,13 @@ Version 1.7.0beta74 [December 15, 2015]
the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error
checks) and changed the check to only operate in non-release builds
(base build type not RC or RELEASE.)
Fixed undefined behavior in pngvalid.c, undefined because
(png_byte) << shift is undefined if it changes the signed bit
(because png_byte is promoted to int). The libpng exported functions
png_get_uint_32 and png_get_uint_16 handle this. (Bug reported by
David Drysdale as a result of reports from UBSAN in clang 3.8).
This changes pngvalid to use BE random numbers; this used to produce
errors but these should not be fixed as a result of the previous changes.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

2
contrib/libtests/pngvalid.c
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@ -1,7 +1,7 @@
/* pngvalid.c - validate libpng by constructing then reading png files.
*
* Last changed in libpng 1.6.21 [(PENDING RELEASE)]
* Last changed in libpng 1.5.27 [(PENDING RELEASE)]
* Copyright (c) 2014-2015 Glenn Randers-Pehrson
* Written by John Cunningham Bowler
*