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[libpng17] Handle zero-length PLTE chunk or NULL palette with png_error()

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instead of png_chunk_report(), which by default issues a warning
rather than an error, leading to later reading from a NULL pointer
(png_ptr->palette) in png_do_expand_palette().
This commit is contained in:
Glenn Randers-Pehrson
2013-12-15 08:47:52 -06:00
parent 3adf438f39
commit 1faa6ff32c
4 changed files with 15 additions and 4 deletions
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8
ANNOUNCE
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@@ -1,5 +1,5 @@
Libpng 1.7.0beta24 - December 14, 2013
Libpng 1.7.0beta24 - December 15, 2013
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.
@@ -437,7 +437,7 @@ Version 1.7.0beta23 [November 24, 2013]
This reverts to the previous 'static' implementation and works round
the 'unused static function' warning by using PNG_UNUSED().
Version 1.7.0beta24 [December 14, 2013]
Version 1.7.0beta24 [December 15, 2013]
Removed or marked PNG_UNUSED some harmless "dead assignments" reported
by clang scan-build.
Changed tabs to 3 spaces in png_debug macros and changed '"%s"m'
@@ -456,6 +456,10 @@ Version 1.7.0beta24 [December 14, 2013]
segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
maintenance by removing the declarations from pngpriv.h and allowing
easier changes to the internal interfaces.
Handle zero-length PLTE chunk or NULL palette with png_error()
instead of png_chunk_report(), which by default issues a warning
rather than an error, leading to later reading from a NULL pointer
(png_ptr->palette) in png_do_expand_palette().
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