Nope. That doesn't work either. I wrapped your code into a sub, so I could call it multiple times and got:
Testing(some data) at D:\test.pl line 5, <DATA> line 1.
Testing at D:\test.pl line 13.
Testing(some data) at D:\test.pl line 5, <DATA> line 1.
Can't save DATA: Bad file descriptor
Here is test.pl:
sub Tye
{
my $pos= tell(DATA);
chomp( my $x= <DATA> );
warn "Testing($x)";
{
my $fh= do { local(*FH); \*FH };
open $fh, "<&DATA" or die "Can't save DATA: $!\n";
close DATA or warn "Can't close DATA: $!\n";
open DATA, "<&=".fileno($fh) or die "Can't restore DATA: $!\n";
seek DATA, $pos, 0 or die "Can't reposition DATA: $!\n";
}
warn "Testing";
}
Tye();
Tye();
__END__
some data