Would be nice if someone could show me a case where perl gets confused. I could not create one

Confused by addition: 

>perl -wle"@a=1; for ((),@a) { push @a,$_+1; print }"
1

>perl -wle"@a=1; for (@a) { push @a,$_+1; print }"
1
2
3
4
...

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Confused by deletion: 

>perl -wle"@a=(1,2); for (@a) { pop @a; print qq{<$_>} }"
<1>

>perl -wle"@a=(1,2); for ((),@a) { pop @a; print qq{<$_>} }"
<1>
Use of freed value in iteration at -e line 1.

[download]

In reply to Re^3: How foreach loops decide what to iterate through (push array inside foreach) by ikegami
in thread How foreach loops decide what to iterate through by lefthanded

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