You're consuming a resource (3 open filehandles). This is 'small' (~1024, configurable) and finite on some platforms (most Unices, not Windows).
C:\temp\test>perl -e "{open my $f,'>',++$a or die qq|$a: $!|;push @a,$
+f;redo}
2046: Too many open files at -e line 1.

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In reply to Re^2: FileHandle objects as data members of another object by blazar
in thread FileHandle objects as data members of another object by jkeenan1

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