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[devel] Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c

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This commit is contained in:
Glenn Randers-Pehrson
2010-01-01 10:24:25 -06:00
parent 45af819322
commit a515d3066e
3 changed files with 91 additions and 1776 deletions
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11
pngrutil.c
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@@ -1,8 +1,8 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.4.0 [December 29, 2009]
* Copyright (c) 1998-2009 Glenn Randers-Pehrson
* Last changed in libpng 1.4.0 [January 1, 2010]
* Copyright (c) 1998-2010 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.)
*
@@ -3285,9 +3285,12 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
{
png_free(png_ptr, png_ptr->big_row_buf);
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
if (png_ptr->interlaced)
png_memset(png_ptr->big_row_buf, 0, row_bytes + 48);
png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
row_bytes + 48);
else
png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr,
row_bytes + 48);
png_ptr->old_big_row_buf_size = row_bytes + 48;
#ifdef PNG_ALIGNED_MEMORY_SUPPORTED