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[libpng14] Fixed incorrect typecast of some arguments to png_malloc() and

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png_calloc() that were png_uint_32 instead of png_alloc_size_t
(Bug report by "irwir" in Github libpng issue #175).
This commit is contained in:
Glenn Randers-Pehrson 2017-09-03 16:00:26 -05:00
parent c334bdf793
commit d2ce3770fa
3 changed files with 21 additions and 15 deletions
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3
ANNOUNCE
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@ -33,6 +33,9 @@ version 1.4.22beta01 [August 28. 2017]
version 1.4.22beta02 [%RDATE%]
Compute a larger limit on IDAT because some applications write a deflate
buffer for each row (Bug report by Andrew Church).
Fixed incorrect typecast of some arguments to png_malloc() and
png_calloc() that were png_uint_32 instead of png_alloc_size_t
(Bug report by "irwir" in Github libpng issue #175).
Send comments/corrections/commendations to glennrp at users.sourceforge.net
or to png-mng-implement at lists.sf.net (subscription required; visit

3
CHANGES
View File

@ -3063,6 +3063,9 @@ version 1.4.22beta01 [August 28. 2017]
version 1.4.22beta02 [September 3, 2017]
Compute a larger limit on IDAT because some applications write a deflate
buffer for each row (Bug report by Andrew Church).
Fixed incorrect typecast of some arguments to png_malloc() and
png_calloc() that were png_uint_32 instead of png_alloc_size_t
(Bug report by "irwir" in Github libpng issue #175).
Send comments/corrections/commendations to glennrp at users.sourceforge.net
or to png-mng-implement at lists.sf.net (subscription required; visit

30
pngrtran.c
View File

@ -1,8 +1,8 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.4.17 [November 12, 2015]
* Copyright (c) 1998-2002,2004,2006-2015 Glenn Randers-Pehrson
* Last changed in libpng 1.4.22 [September 3, 2017]
* Copyright (c) 1998-2002,2004,2006-2015,2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -176,7 +176,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
int i;
png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof(png_byte)));
(png_alloc_size_t)(num_palette * png_sizeof(png_byte)));
for (i = 0; i < num_palette; i++)
png_ptr->quantize_index[i] = (png_byte)i;
}
@ -193,7 +193,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
/* Initialize an array to sort colors */
png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof(png_byte)));
(png_alloc_size_t)(num_palette * png_sizeof(png_byte)));
/* Initialize the quantize_sort array */
for (i = 0; i < num_palette; i++)
@ -325,9 +325,9 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
/* Initialize palette index arrays */
png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof(png_byte)));
(png_alloc_size_t)(num_palette * png_sizeof(png_byte)));
png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof(png_byte)));
(png_alloc_size_t)(num_palette * png_sizeof(png_byte)));
/* Initialize the sort array */
for (i = 0; i < num_palette; i++)
@ -367,7 +367,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
{
t = (png_dsortp)png_malloc_warn(png_ptr,
(png_uint_32)(png_sizeof(png_dsort)));
(png_alloc_size_t)(png_sizeof(png_dsort)));
if (t == NULL)
break;
t->next = hash[d];
@ -489,7 +489,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
png_ptr->palette_lookup = (png_bytep )png_calloc(png_ptr,
(png_uint_32)(num_entries * png_sizeof(png_byte)));
distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
distance = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)(num_entries *
png_sizeof(png_byte)));
png_memset(distance, 0xff, num_entries * png_sizeof(png_byte));
@ -4000,7 +4000,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
g = 1.0;
png_ptr->gamma_table = (png_bytep)png_malloc(png_ptr,
(png_uint_32)256);
(png_alloc_size_t)256);
for (i = 0; i < 256; i++)
{
@ -4016,7 +4016,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
g = 1.0 / (png_ptr->gamma);
png_ptr->gamma_to_1 = (png_bytep)png_malloc(png_ptr,
(png_uint_32)256);
(png_alloc_size_t)256);
for (i = 0; i < 256; i++)
{
@ -4026,7 +4026,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
png_ptr->gamma_from_1 = (png_bytep)png_malloc(png_ptr,
(png_uint_32)256);
(png_alloc_size_t)256);
if (png_ptr->screen_gamma > 0.000001)
g = 1.0 / png_ptr->screen_gamma;
@ -4103,7 +4103,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof(png_uint_16)));
(png_alloc_size_t)(256 * png_sizeof(png_uint_16)));
}
g = 1.0 / g;
@ -4133,7 +4133,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof(png_uint_16)));
(png_alloc_size_t)(256 * png_sizeof(png_uint_16)));
ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4);
@ -4159,7 +4159,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_to_1[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof(png_uint_16)));
(png_alloc_size_t)(256 * png_sizeof(png_uint_16)));
ig = (((png_uint_32)i *
(png_uint_32)png_gamma_shift[shift]) >> 4);
@ -4183,7 +4183,7 @@ png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_from_1[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof(png_uint_16)));
(png_alloc_size_t)(256 * png_sizeof(png_uint_16)));
ig = (((png_uint_32)i *
(png_uint_32)png_gamma_shift[shift]) >> 4);