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[libpng15] De-configured build fixes to make a range of deconfiguration options

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(such as switching off read or write support) work in more cases.  Also
upgraded pngtest and pngvalid to the libpng 1.6 versions (with some
modifications) which provide more extensive testing.  Replaced pngtest.png
because pngtest writes the ancillary chunks in a different order.
This commit is contained in:
John Bowler
2013-01-06 12:38:39 -06:00
committed by Glenn Randers-Pehrson
parent 8e4a89f0f9
commit 84dc479108
8 changed files with 565 additions and 357 deletions
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4
pngrtran.c
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@@ -4746,7 +4746,9 @@ png_do_expand(png_row_infop row_info, png_bytep row,
{
if (row_info->bit_depth == 8)
{
gray = gray & 0xff;
/* NOTE: prior to libpng 1.5.14 this cleared out the top bits of
* 'gray', however if those are set it is an error.
*/
sp = row + (png_size_t)row_width - 1;
dp = row + (png_size_t)(row_width << 1) - 1;