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[libpng17] Fixed another Coverity defect, NULL dereference "ps" in pngwutil.c

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This commit is contained in:
Glenn Randers-Pehrson 2016-01-08 18:59:36 -06:00
parent 27e11dc8cf
commit 09a1afbb3d
3 changed files with 6 additions and 4 deletions
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5
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.7.0beta77 - January 7, 2016 Libpng 1.7.0beta77 - January 9, 2016
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.
@ -1172,7 +1172,8 @@ Version 1.7.0beta76 [January 7, 2016]
Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c
Added temporary workaround for Coverity "Dead code" defect. Added temporary workaround for Coverity "Dead code" defect.
Version 1.7.0beta77 [January 7, 2016] Version 1.7.0beta77 [January 9, 2016]
Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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3
CHANGES
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@ -5471,7 +5471,8 @@ Version 1.7.0beta76 [January 7, 2016]
Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c
Added temporary workaround for Coverity "Dead code" defect. Added temporary workaround for Coverity "Dead code" defect.
Version 1.7.0beta77 [January 7, 2016] Version 1.7.0beta77 [January 9, 2016]
Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c
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

2
pngwutil.c
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@ -2272,7 +2272,7 @@ png_start_IDAT(png_structrp png_ptr)
} }
# endif /* WRITE_FILTER */ # endif /* WRITE_FILTER */
if (ps->zlib_strategy == (-1)/*unset*/) if (ps && ps->zlib_strategy == (-1)/*unset*/)
{ {
# ifdef PNG_WRITE_FILTER_SUPPORTED # ifdef PNG_WRITE_FILTER_SUPPORTED
if (ps->filter_mask != PNG_FILTER_NONE) if (ps->filter_mask != PNG_FILTER_NONE)