utf8.c AOK

     [utf8_to_uv]
     Malformed UTF-8 character
	my $a = ord "\x80" ;

     Malformed UTF-8 character
	my $a = ord "\xf080" ;
     <<<<<< this warning can't be easily triggered from perl anymore

     [utf16_to_utf8]
     Malformed UTF-16 surrogate		
     <<<<<< Add a test when somethig actually calls utf16_to_utf8

__END__
# utf8.c [utf8_to_uv] -W
use utf8 ;
my $a = "snøstorm" ;
{
    no warnings 'utf8' ;
    my $a = "snøstorm";
    use warnings 'utf8' ;
    my $a = "snøstorm";
}
EXPECT
Malformed UTF-8 character at - line 3.
Malformed UTF-8 character at - line 8.
########