31       png_debug(5, "writing extra chunks");  in write_unknown_chunks()
86    png_debug(1, "in png_write_info_before_PLTE");  in png_write_info_before_PLTE()
198    png_debug(1, "in png_write_info");  in png_write_info()
355    png_debug(1, "in png_write_end");  in png_write_end()
463    png_debug(1, "in png_convert_from_struct_tm");  in png_convert_from_struct_tm()
478    png_debug(1, "in png_convert_from_time_t");  in png_convert_from_time_t()
574    png_debug(1, "in png_write_rows");  in png_write_rows()
599    png_debug(1, "in png_write_image");  in png_write_image()
625    png_debug(1, "in png_do_write_intrapixel");  in png_do_write_intrapixel()
899    png_debug(1, "in png_set_flush");  in png_set_flush()
911    png_debug(1, "in png_write_flush");  in png_write_flush()
930    png_debug(1, "in png_write_destroy");  in png_write_destroy()
970    png_debug(1, "in png_destroy_write_struct");  in png_destroy_write_struct()
991    png_debug(1, "in png_set_filter");  in png_set_filter()
1149    png_debug(1, "in png_set_compression_level");  in png_set_compression_level()
1160    png_debug(1, "in png_set_compression_mem_level");  in png_set_compression_mem_level()
1171    png_debug(1, "in png_set_compression_strategy");  in png_set_compression_strategy()
1215    png_debug(1, "in png_set_compression_method");  in png_set_compression_method()
1235    png_debug(1, "in png_set_text_compression_level");  in png_set_text_compression_level()
1246    png_debug(1, "in png_set_text_compression_mem_level");  in png_set_text_compression_mem_level()
1257    png_debug(1, "in png_set_text_compression_strategy");  in png_set_text_compression_strategy()
1292    png_debug(1, "in png_set_text_compression_method");  in png_set_text_compression_method()
1319    png_debug(1, "in png_set_write_user_transform_fn");  in png_set_write_user_transform_fn()