44       png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");  in png_write_info_before_PLTE()
124                png_warning(png_ptr, "Writing zero-length unknown chunk");  in png_write_info_before_PLTE()
204       png_warning(png_ptr,  in png_write_info()
247           png_warning(png_ptr, "Unable to write international text");  in png_write_info()
261          png_warning(png_ptr, "Unable to write compressed text");  in png_write_info()
277          png_warning(png_ptr, "Unable to write uncompressed text");  in png_write_info()
354             png_warning(png_ptr, "Unable to write international text");  in png_write_end()
367             png_warning(png_ptr, "Unable to write compressed text");  in png_write_end()
379             png_warning(png_ptr, "Unable to write uncompressed text");  in png_write_end()
556            png_warning(png_ptr, msg);  in png_create_write_struct_2()
561         png_warning(png_ptr, msg);  in png_create_write_struct_2()
629          png_warning(png_ptr, msg);  in png_write_init_2()
634       png_warning(png_ptr, msg);  in png_write_init_2()
684          png_warning(png_ptr,  in png_write_init_3()
810          png_warning(png_ptr,  in png_write_row()
815          png_warning(png_ptr,  in png_write_row()
821          png_warning(png_ptr,  in png_write_row()
826          png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined.");  in png_write_row()
830          png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined.");  in png_write_row()
834          png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined.");  in png_write_row()
838          png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");  in png_write_row()
1198          case 7: png_warning(png_ptr, "Unknown row filter for method 0");  in png_set_filter()
1213          default: png_warning(png_ptr, "Unknown row filter for method 0");  in png_set_filter()
1240                png_warning(png_ptr, "Can't add Up filter after starting");  in png_set_filter()
1255                png_warning(png_ptr, "Can't add Average filter after starting");  in png_set_filter()
1271                png_warning(png_ptr, "Can't add Paeth filter after starting");  in png_set_filter()
1312       png_warning(png_ptr, "Unknown filter heuristic method");  in png_set_filter_heuristics()
1457       png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");  in png_set_compression_window_bits()
1459       png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");  in png_set_compression_window_bits()
1464        png_warning(png_ptr, "Compression window is being reset to 512");  in png_set_compression_window_bits()
1480       png_warning(png_ptr, "Only compression method 8 is supported by PNG");  in png_set_compression_method()