mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[libpng15] Revised workaround for Coverity issue in pngvalid.c

Browse Source
This commit is contained in:
Glenn Randers-Pehrson 2016-01-23 10:06:58 -06:00
parent 7190c4f5af
commit 73adedf0e4
1 changed files with 7 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
contrib/libtests/pngvalid.c
View File

@ -1,7 +1,7 @@
/* pngvalid.c - validate libpng by constructing then reading png files.
*
* Last changed in libpng 1.6.21 [(PENDING RELEASE)]
* Last changed in libpng 1.6.22 [(PENDING RELEASE)]
* Copyright (c) 2014-2016 Glenn Randers-Pehrson
* Written by John Cunningham Bowler
*
@ -309,13 +309,8 @@ static void r16(png_uint_16p p16, size_t count)
}
}
#ifdef __COVERITY__
# define R16(this)\
r16(&(this), (sizeof (this))/2U/*(sizeof (png_uint_16))*/)
#else
# define R16(this)\
r16(&(this), (sizeof (this))/(sizeof (png_uint_16)))
#endif
#define R16(this) r16(&(this), (sizeof (this))/(sizeof (png_uint_16)))
#define R16_1(this) r16(&(this), (size_t) 1U)
#if defined PNG_READ_RGB_TO_GRAY_SUPPORTED ||\
defined PNG_READ_FILLER_SUPPORTED
@ -331,13 +326,8 @@ static void r32(png_uint_32p p32, size_t count)
}
}
#ifdef __COVERITY__
# define R32(this)\
r32(&(this), (sizeof (this))/4U/*(sizeof (png_uint_32))*/)
#else
# define R32(this)\
r32(&(this), (sizeof (this))/(sizeof (png_uint_32)))
#endif
#define R32(this) r32(&(this), (sizeof (this))/(sizeof (png_uint_32)))
#define R32_1(this) r32(&(this), (size_t) 1U)
#endif /* READ_FILLER || READ_RGB_TO_GRAY */
@ -350,7 +340,7 @@ random_mod(unsigned int max)
{
png_uint_16 x;
R16(x);
R16_1(x);
return x % max; /* 0 .. max-1 */
}
@ -7313,7 +7303,7 @@ image_transform_png_set_rgb_to_gray_ini(const image_transform *this,
png_uint_32 ru;
double total;
R32(ru);
R32_1(ru);
data.green_coefficient = total = (ru & 0xffff) / 65535.;
ru >>= 16;
data.red_coefficient = (1 - total) * (ru & 0xffff) / 65535.;