I am not really sure if I understand what you are trying to say (but it is very interesting) - so thanks for that.

For me I am trying to figure out why perl handles the cases differently.

My position is that what happens in the first case is the proper thing to do.

You want to open a file for reading and you supply undef as a file-name: Error. That's how I think it should be.

And I still cannot quite see why the cases supplied should be different.

And there is this: 

perl -MDevel::Peek -e'Dump($ARGV[0])'
SV = NULL(0x0) at 0x55a8c4978560
  REFCNT = 2147483639
  FLAGS = (READONLY,PROTECT)

perl -MDevel::Peek -e'Dump(undef)'
SV = NULL(0x0) at 0x55923aa70560
  REFCNT = 2147483639
  FLAGS = (READONLY,PROTECT)

[download]
Both have the same high refcount, but the addresses seem to differ - why is that?

Is this a can of worms that one should not open?

In reply to Re^4: open undef by morgon
in thread open undef by morgon

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