check_error       993 contrib/libtests/pngunknown.c    check_error(d, (flags[0][0]|flags[0][2]) & (flags[0][1]|flags[0][3]),
check_error       995 contrib/libtests/pngunknown.c    check_error(d, (flags[1][0]|flags[1][2]) & (flags[1][1]|flags[1][3]),
check_error      1007 contrib/libtests/pngunknown.c       check_error(d, test, "new known chunk before IDAT");
check_error      1009 contrib/libtests/pngunknown.c       check_error(d, test, "new unknown chunk before IDAT");
check_error      1011 contrib/libtests/pngunknown.c       check_error(d, test, "new known chunk after IDAT");
check_error      1013 contrib/libtests/pngunknown.c       check_error(d, test, "new unknown chunk after IDAT");