[perl #122771] Devel::NYTProf causes perl assert failure: function Perl_rpeep, file op.c

This looks like a perl bug rather than a Devel::NYTProf problem.

Here's a pure-perl reproducer:

  perl -d -e 'BEGIN { $^P &= ~0x4 } sort { $$b <=> $$a } ()'

0x4 is PERLDBf_NOOPT.

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via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=122771

• [perl #122771] Devel::NYTProf causes perl assert failure: function Perl_rpeep, file op.c by Father Chrysostomos via RT
• Re: [perl #122771] Devel::NYTProf causes perl assert failure:function Perl_rpeep, file op.c by Tim Bunce
• [perl #122771] Devel::NYTProf causes perl assert failure: function Perl_rpeep, file op.c by Father Chrysostomos via RT
• [perl #122771] Devel::NYTProf causes perl assert failure: function Perl_rpeep, file op.c by Tim Bunce via RT
• [perl #122771] Devel::NYTProf causes perl assert failure: function Perl_rpeep, file op.c by Tim Bunce via RT