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Re: [perl #132774] Segfault when accessing pad_compname_type

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Dave Mitchell
January 31, 2018 18:18
Re: [perl #132774] Segfault when accessing pad_compname_type
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On Tue, Jan 30, 2018 at 02:02:25AM -0800, KES via RT wrote:
> PL_comppad and PL_comppad_name are named similarly, so they should have
> similar behavior

That is not a valid reason for changing the existing behaviour.

> It will be handy to have one PL_curcv and
> PL_curcv.curpad, PL_curcv.padnames, PL_curcv.depth, PL_curcv.pads(N) (where PL_curcv.pads(0) will return .curpad)
> Also PL_curcv maybe returned from find_runcv(0)

All that extra state would incur overhead on each function call and

On the other hand, I've been considering  for a while implementing a
PL_curcv var, but it would be a CV* rather than what you suggest. The
cost of saving/restoring it would be weighed against currently having to
save/restore PL_comppad. Also, getting the context of the last expression
in a sub would become cheaper. This happens quite a lot.

In my day, we used to edit the inodes by hand.  With magnets.

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