65                png_warning(png_ptr, "Writing zero-length unknown chunk");  in write_unknown_chunks()
100          png_warning(png_ptr,  in png_write_info_before_PLTE()
307          png_warning(png_ptr, "Unable to write international text");  in png_write_info()
321          png_warning(png_ptr, "Unable to write compressed text");  in png_write_info()
336          png_warning(png_ptr, "Unable to write uncompressed text");  in png_write_info()
404             png_warning(png_ptr, "Unable to write international text");  in png_write_end()
417             png_warning(png_ptr, "Unable to write compressed text");  in png_write_end()
430             png_warning(png_ptr, "Unable to write uncompressed text");  in png_write_end()
709          png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");  in png_write_row()
714          png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined");  in png_write_row()
719          png_warning(png_ptr,  in png_write_row()
725          png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined");  in png_write_row()
730          png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined");  in png_write_row()
735          png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined");  in png_write_row()
740          png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined");  in png_write_row()
1199       png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");  in png_set_compression_window_bits()
1205       png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");  in png_set_compression_window_bits()
1224       png_warning(png_ptr, "Only compression method 8 is supported by PNG");  in png_set_compression_method()
1276       png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");  in png_set_text_compression_window_bits()
1282       png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");  in png_set_text_compression_window_bits()
1298       png_warning(png_ptr, "Only compression method 8 is supported by PNG");  in png_set_text_compression_method()