PNG_INFO_IDAT     859 contrib/libtests/pngimage.c    if ((dp->chunks & PNG_INFO_IDAT) == 0) /* set by png_read_png */
PNG_INFO_IDAT     181 contrib/libtests/pngunknown.c    { "IDAT", PNG_INFO_IDAT, png_IDAT, 0, 0,  START, 0 }, /* must be [0] */
PNG_INFO_IDAT     831 contrib/libtests/pngunknown.c       PNG_INFO_IDAT;
PNG_INFO_IDAT     629 png.c                info_ptr->valid &= ~PNG_INFO_IDAT;
PNG_INFO_IDAT    1199 pngread.c         info_ptr->valid |= PNG_INFO_IDAT;
PNG_INFO_IDAT    1453 pngset.c             info_ptr->valid |= PNG_INFO_IDAT;
PNG_INFO_IDAT    1553 pngwrite.c        if ((info_ptr->valid & PNG_INFO_IDAT) == 0)