You are seeing Copy-on-Write in action. In 5.32, the 's' x 32 expression is constant-folded at compile time, creating a hidden SV containing the 32-byte string. At run time this buffer is copied to $s. In 5.42, the copy is deferred: both $s and the hidden SV share the same PV buffer. When something happens to $s which looks like its buffer is going to be modified, then at that point the buffer is finally copied. pack 'p' is a wild-enough operation that perl assumes the worst, so does the copy before returning the (new) PC address.

The larger addresses are nothing to do with perl; they are just what the underlying OS and malloc() library supply.

Dave.

In reply to Re: Latest Strawberries: addresses reported by "p", Devel::Peek, etc. by dave_the_m
in thread Latest Strawberries: addresses reported by "p", Devel::Peek, etc. by Anonymous Monk

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