37       png_warning(png_ptr,"MNG features are not allowed in a PNG datastream");  in png_write_info_before_PLTE()
190       png_warning(png_ptr,  in png_write_info()
230           png_warning(png_ptr, "Unable to write international text");  in png_write_info()
244          png_warning(png_ptr, "Unable to write compressed text");  in png_write_info()
257          png_warning(png_ptr, "Unable to write uncompressed text");  in png_write_info()
333              png_warning(png_ptr, "Unable to write international text");  in png_write_end()
346             png_warning(png_ptr, "Unable to write compressed text");  in png_write_end()
358             png_warning(png_ptr, "Unable to write uncompressed text");  in png_write_end()
518           png_warning(png_ptr, msg);  in png_create_write_struct_2()
523         png_warning(png_ptr, msg);  in png_create_write_struct_2()
590         png_warning(png_ptr, msg);  in png_write_init_2()
595       png_warning(png_ptr, msg);  in png_write_init_2()
643        png_warning(png_ptr,  in png_write_init_3()
776       png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined.");  in png_write_row()
780       png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined.");  in png_write_row()
784       png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");  in png_write_row()
788       png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined.");  in png_write_row()
792       png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined.");  in png_write_row()
796       png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined.");  in png_write_row()
800       png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");  in png_write_row()
1142          case 7: png_warning(png_ptr, "Unknown row filter for method 0");  in png_set_filter()
1157          default: png_warning(png_ptr, "Unknown row filter for method 0");  in png_set_filter()
1184                png_warning(png_ptr, "Can't add Up filter after starting");  in png_set_filter()
1199                png_warning(png_ptr, "Can't add Average filter after starting");  in png_set_filter()
1215                png_warning(png_ptr, "Can't add Paeth filter after starting");  in png_set_filter()
1255       png_warning(png_ptr, "Unknown filter heuristic method");  in png_set_filter_heuristics()
1397       png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");  in png_set_compression_window_bits()
1399       png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");  in png_set_compression_window_bits()
1404        png_warning(png_ptr, "Compression window is being reset to 512");  in png_set_compression_window_bits()
1419       png_warning(png_ptr, "Only compression method 8 is supported by PNG");  in png_set_compression_method()