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[libpng16] Fixed a memory overwrite bug in simplified read of RGB PNG with

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Fixed a memory overwrite bug in simplified read of RGB PNG with
non-linear gamma Also bugs in the error checking in pngread.c and changed
quite a lot of the checks in pngstest.c to be correct; either correctly
written or not over-optimistic.  The pngstest changes are insufficient to
allow all possible RGB transforms to be passed; pngstest cmppixel needs
to be rewritten to make it clearer which errors it allows and then changed
to permit known inaccuracies.
This commit is contained in:
Glenn Randers-Pehrson
2012-02-10 17:13:13 -06:00
parent 74df4f1956
commit 864270e18f
4 changed files with 184 additions and 127 deletions
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12
ANNOUNCE
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@@ -1,5 +1,5 @@
Libpng 1.6.0beta11 - February 4, 2012
Libpng 1.6.0beta11 - February 10, 2012
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.
@@ -176,7 +176,7 @@ Version 1.6.0beta10 [February 3, 2012]
Updated the prebuilt configure files to current condition.
Revised INSTALL information about autogen.sh; it works in tar distributions.
Version 1.6.0beta11 [February 4, 2012]
Version 1.6.0beta11 [February 10, 2012]
Fix character count in pngstest command in projects/owatcom/pngstest.tgt
Revised test-pngstest.sh to report PASS/FAIL for each image.
Updated documentation about the simplified API.
@@ -188,6 +188,14 @@ Version 1.6.0beta11 [February 4, 2012]
error of 14.99/255; 0.5/255^(1/2.2). pngstest now uses 15 for the
permitted 8-bit error. This may still not be enough because of arithmetic
error.
Removed some unused arrays (with #ifdef) from png_read_push_finish_row().
Fixed a memory overwrite bug in simplified read of RGB PNG with
non-linear gamma Also bugs in the error checking in pngread.c and changed
quite a lot of the checks in pngstest.c to be correct; either correctly
written or not over-optimistic. The pngstest changes are insufficient to
allow all possible RGB transforms to be passed; pngstest cmppixel needs
to be rewritten to make it clearer which errors it allows and then changed
to permit known inaccuracies.
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