in reply to Re^2: Autovivification sucking the life out of me
in thread Autovivification sucking the life out of me

Wow, thanks for the examples. It would seem "simple usage" is not what people would assume it is. I will go file a bug report against PathTools, but it may be instructive to see how easy it is to fall into this trap. Here is the line of code in File::Spec::Win32.pm that caused me all the grief:
$tmpdir = $_[0]->_tmpdir( @ENV{qw(TMPDIR TEMP TMP)}, 'SYS:/temp', 'C:\system\temp', 'C:/temp', '/tmp', '/' );
Sure looks innocent, huh? Of course the 'fix' will be to change the references to 'simple' ones,
$tmpdir = $_[0]->_tmpdir( $ENV{TMPDIR}, $ENV{TEMP}, $ENV{TMP},

And in answer to Skeeve, yes, I am a "bug-magnet"