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Set png_ptr->old_prev_row_size=0 to force prev_row to be cleared

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Glenn Randers-Pehrson
2009-05-16 08:47:20 -05:00
parent ba05bddf92
commit f4276c36c9
4 changed files with 15 additions and 8 deletions
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10
pngpread.c
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@@ -1,9 +1,9 @@
/* pngpread.c - read a png file in push mode
*
* Last changed in libpng 1.2.32 [September 18, 2008]
* Last changed in libpng 1.2.37 [May 16, 2009]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson
* Copyright (c) 1998-2009 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.)
*/
@@ -1013,11 +1013,12 @@ png_read_push_finish_row(png_structp png_ptr)
if (png_ptr->row_number < png_ptr->num_rows)
return;
png_ptr->old_prev_row_size = 0; /* Force clearing prev_row */
#ifdef PNG_READ_INTERLACING_SUPPORTED
if (png_ptr->interlaced)
{
png_ptr->row_number = 0;
png_memset_check(png_ptr, png_ptr->prev_row, 0,
png_ptr->rowbytes + 1);
do
{
png_ptr->pass++;
@@ -1049,6 +1050,7 @@ png_read_push_finish_row(png_structp png_ptr)
} while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
}
#endif /* PNG_READ_INTERLACING_SUPPORTED */
}
#if defined(PNG_READ_tEXt_SUPPORTED)