385    png_debug(1, "in png_write_IHDR\n");  in png_write_IHDR()
553    png_debug(1, "in png_write_PLTE\n");  in png_write_PLTE()
612    png_debug(1, "in png_write_IDAT\n");  in png_write_IDAT()
664    png_debug(1, "in png_write_IEND\n");  in png_write_IEND()
682    png_debug(1, "in png_write_gAMA\n");  in png_write_gAMA()
698    png_debug(1, "in png_write_gAMA\n");  in png_write_gAMA_fixed()
716    png_debug(1, "in png_write_sRGB\n");  in png_write_sRGB()
739    png_debug(1, "in png_write_iCCP\n");  in png_write_iCCP()
817    png_debug(1, "in png_write_sPLT\n");  in png_write_sPLT()
893    png_debug(1, "in png_write_sBIT\n");  in png_write_sBIT()
952    png_debug(1, "in png_write_cHRM\n");  in png_write_cHRM()
1013    png_debug(1, "in png_write_cHRM\n");  in png_write_cHRM_fixed()
1066    png_debug(1, "in png_write_tRNS\n");  in png_write_tRNS()
1120    png_debug(1, "in png_write_bKGD\n");  in png_write_bKGD()
1174    png_debug(1, "in png_write_hIST\n");  in png_write_hIST()
1213    png_debug(1, "in png_check_keyword\n");  in png_check_keyword()
1336    png_debug(1, "in png_write_tEXt\n");  in png_write_tEXt()
1379    png_debug(1, "in png_write_zTXt\n");  in png_write_zTXt()
1438    png_debug(1, "in png_write_iTXt\n");  in png_write_iTXt()
1524    png_debug(1, "in png_write_oFFs\n");  in png_write_oFFs()
1607    png_debug(1, "in png_write_sCAL\n");  in png_write_sCAL()
1647    png_debug(1, "in png_write_sCAL_s\n");  in png_write_sCAL_s()
1681    png_debug(1, "in png_write_pHYs\n");  in png_write_pHYs()
1705    png_debug(1, "in png_write_tIME\n");  in png_write_tIME()
1747    png_debug(1, "in png_write_start_row\n");  in png_write_start_row()
1843    png_debug(1, "in png_write_finish_row\n");  in png_write_finish_row()
1952    png_debug(1, "in png_do_write_interlace\n");  in png_do_write_interlace()
2121    png_debug(1, "in png_write_find_filter\n");  in png_write_find_filter()
2726    png_debug(1, "in png_write_filtered_row\n");  in png_write_filtered_row()