1737038.patch (962B)
1 diff --git a/pngwutil.c b/pngwutil.c 2 --- a/pngwutil.c 3 +++ b/pngwutil.c 4 @@ -353,8 +353,10 @@ png_deflate_claim(png_structrp png_ptr, 5 if ((png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY) != 0) 6 strategy = png_ptr->zlib_strategy; 7 8 +#ifdef PNG_WRITE_FILTER_SUPPORTED 9 else if (png_ptr->do_filter != PNG_FILTER_NONE) 10 strategy = PNG_Z_DEFAULT_STRATEGY; 11 +#endif 12 13 else 14 strategy = PNG_Z_DEFAULT_NOFILTER_STRATEGY; 15 @@ -840,12 +842,16 @@ png_write_IHDR(png_structrp png_ptr, png 16 17 if ((png_ptr->do_filter) == PNG_NO_FILTERS) 18 { 19 +#ifdef PNG_WRITE_FILTER_SUPPORTED 20 if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE || 21 png_ptr->bit_depth < 8) 22 png_ptr->do_filter = PNG_FILTER_NONE; 23 24 else 25 png_ptr->do_filter = PNG_ALL_FILTERS; 26 +#else 27 + png_ptr->do_filter = PNG_FILTER_NONE; 28 +#endif 29 } 30 31 png_ptr->mode = PNG_HAVE_IHDR; /* not READY_FOR_ZTXT */