MNG files).

(only update the value when it actually increases, move test for whether
the check is wanted out of the function.

generating the linker mapfile symbol prefix.

The compiler performs an optimization which is safe; however it then warns
about it.  Changing the type of 'palette_number' in pngvalid.c removes the
warning.

on alignment increasing pointer casts when -Wcast-align is passed. This
fixes the cases clang warns about either (pngread.c) by eliminating the
casts from png_bytep to png_uint_16p or, for pngrutil.c where the cast
is previously verified or pngstest.c where it is OK by introducing new
png_aligncast macros to do the cast in a way that clang accepts.

scripts/makefile.freebsd

declaration of png_handle_unknown().

around architecture list; add missing ppc architecture; add architecture
options to shared library link; don't try to create a shared lib based on
missing RELEASE variable (Toby Thain).

Fixes CVE-2011-3048.

    iCCP profile over writing the sRGB chunk, controlled by the
    PNG_sRGB_PROFILE_CHECKS option.

about it, if PNG_WARN_IF_iCCP_IS_sRGB_SUPPORTED is defined.

and moved checksum-icc.c from contrib/libtests to contrib/tools.

if the sRGB chunk had appeared instead.

load iCCP

This allows the --strict option to pass in the pngstest checks

benign errors; also added --strict to pngstest - not enabled
yet because a warning is produced.

checks. The code now does a png_error if an attempt is made to do the
row initialization twice; this is an application error and it has
serious consequences because the transform data in png_struct is
changed by each call.

This turns on PNG_FLAG_DETECT_UNINITIALIZED to detect app code that
fails to call one of the 'start' routines (not enabled in libpng-1.5
because it is technically an API change, since it did normally work
before.)  It also makes duplicate calls to png_read_start_row (an
internal function called at the start of the image read) benign, as
they were before changes to use png_inflate_claim. Somehow webkit is
causing this to happen; this is probably a mis-feature in the zlib
changes so this commit is only a work-round.

when writing.