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[libpng15] 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 15:54:07 -05:00
parent 0d9bc0782e
commit 1a21497f6a
3 changed files with 12 additions and 6 deletions
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3
ANNOUNCE
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@ -35,6 +35,9 @@ Version 1.5.30beta01 [August 28, 2017]
Version 1.5.30beta02 [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 png-mng-implement at lists.sf.net
(subscription required; visit

3
CHANGES
View File

@ -4563,6 +4563,9 @@ Version 1.5.30beta01 [August 28, 2017]
Version 1.5.30beta02 [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 png-mng-implement at lists.sf.net
(subscription required; visit

12
pngrtran.c
View File

@ -396,7 +396,7 @@ 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;
}
@ -413,7 +413,7 @@ 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++)
@ -547,9 +547,9 @@ 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++)
@ -589,7 +589,7 @@ 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;
@ -716,7 +716,7 @@ 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));