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[libpng15] Fixed 'unused' warnings and mergeed with libpng16 pngvalid.

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Various warnings revealed by configurations added to the tested
configurations in libpng 1.6 need corresponding fixes in libpng 1.5.
This takes the libpng 1.6 pngvalid.c and adds it back to libpng 1.5,
however one write-only test is currently disabled because it does not
work; possibly because of failures to reset or initialize the deflate
stream correctly in write-only cases.
This commit is contained in:
John Bowler
2013-12-27 07:27:17 -06:00
committed by Glenn Randers-Pehrson
parent 705ac2fbbc
commit bd7143e6eb
7 changed files with 272 additions and 96 deletions
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6
png.c
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@@ -658,13 +658,13 @@ png_get_copyright(png_const_structp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.5.18beta03 - December 26, 2013" PNG_STRING_NEWLINE \
"libpng version 1.5.18beta03 - December 27, 2013" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2013 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
# else
return "libpng version 1.5.18beta03 - December 26, 2013\
return "libpng version 1.5.18beta03 - December 27, 2013\
Copyright (c) 1998-2013 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@@ -2529,6 +2529,7 @@ png_gamma_significant(png_fixed_point gamma_val)
gamma_val > PNG_FP_1 + PNG_GAMMA_THRESHOLD_FIXED;
}
#ifdef PNG_16BIT_SUPPORTED
/* Internal function to build a single 16-bit table - the table consists of
* 'num' 256-entry subtables, where 'num' is determined by 'shift' - the amount
* to shift the input values right (or 16-number_of_signifiant_bits).
@@ -2601,6 +2602,7 @@ png_build_16bit_table(png_structp png_ptr, png_uint_16pp *ptable,
}
}
}
#endif
/* NOTE: this function expects the *inverse* of the overall gamma transformation
* required.