[libpng16] Undo faulty attempt to stifle oss-fuzz complaint about

png_icc_check_tabler()
This commit is contained in:
Glenn Randers-Pehrson 2017-09-16 08:37:54 -05:00
parent 413de0a56a
commit a7722aee32

13
png.c
View File

@ -816,14 +816,14 @@ png_get_copyright(png_const_structrp png_ptr)
#else #else
# ifdef __STDC__ # ifdef __STDC__
return PNG_STRING_NEWLINE \ return PNG_STRING_NEWLINE \
"libpng version 1.6.33beta04 - September 14, 2017" PNG_STRING_NEWLINE \ "libpng version 1.6.33beta04 - September 16, 2017" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson" \ "Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \ PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE; PNG_STRING_NEWLINE;
# else # else
return "libpng version 1.6.33beta04 - September 14, 2017\ return "libpng version 1.6.33beta04 - September 16, 2017\
Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson\ Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\ Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."; Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@ -2208,18 +2208,15 @@ png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
png_uint_32 tag_count = png_get_uint_32(profile+128); png_uint_32 tag_count = png_get_uint_32(profile+128);
png_uint_32 itag; png_uint_32 itag;
png_const_bytep tag = profile+132; /* The first tag */ png_const_bytep tag = profile+132; /* The first tag */
png_uint_32 tag_start = 0;
png_uint_32 tag_id = 0;
png_uint_32 tag_length = 0;
/* First scan all the tags in the table and add bits to the icc_info value /* First scan all the tags in the table and add bits to the icc_info value
* (temporarily in 'tags'). * (temporarily in 'tags').
*/ */
for (itag=0; itag < tag_count; ++itag, tag += 12) for (itag=0; itag < tag_count; ++itag, tag += 12)
{ {
tag_id = png_get_uint_32(tag+0); png_uint_32 tag_id = png_get_uint_32(tag+0);
tag_length = png_get_uint_32(tag+8);/* not padded */ png_uint_32 tag_length = png_get_uint_32(tag+8);/* not padded */
tag_start = png_get_uint_32(tag+4); /* must be aligned */ png_uint_32 tag_start = png_get_uint_32(tag+4); /* must be aligned */
/* The ICC specification does not exclude zero length tags, therefore the /* The ICC specification does not exclude zero length tags, therefore the
* start might actually be anywhere if there is no data, but this would be * start might actually be anywhere if there is no data, but this would be