DAVEM TPF Grant#2 September 2016 report

I spent last month:

* eliminating the OP_PUSHRE op, converting OP_SPLIT from being a LISTOP to
  a PMOP, and making split faster - see v5.25.5-71-gdbdb57e;

* working on various fuzzer tickets;

* trying to work out when one should use pad_free(), pad_swipe(),
  S_op_clear_gv() or just plain SvREFCNT_dec(). I gave up on this for now;

* picking some quick and low-hanging fruit off my TODO list;

SUMMARY:
      3:52 [perl #125792] [2 PATCHES] sassign is wrongly declared as BASEOP
      1:24 [perl #128998] heap-buffer-overflow Perl_my_atof2
      7:47 [perl #129086] heap-use-after-free Perl_localize
      4:30 [perl #129099] global-buffer-overflow S_finalize_op
      1:45 [perl #129158] null ptr deref, segfault in Perl_pp_split ()
      0:56 [perl #129238] array index constant folding uses signed bitwise arithmetic
      0:31 [perl #129239] BEGIN blocks have wrong caller package
      0:35 [perl #129251]
     14:53 make OP_SPLIT a PMOP and eliminate OP_PUSHRE
     14:12 miscellaneous fixups
     13:03 pad_free and pad_swipe
      2:55 process p5p mailbox
    ------
     66:23 TOTAL (HH::MM)

 154.7 weeks
2107.4 total hours
  13.6 average hours per week

There are 293 hours left on the grant

-- 
The Enterprise is involved in a bizarre time-warp experience which is in
some way unconnected with the Late 20th Century.
    -- Things That Never Happen in "Star Trek" #14

• DAVEM TPF Grant#2 September 2016 report by Dave Mitchell
• Re: DAVEM TPF Grant#2 September 2016 report by Sawyer X
• Re: DAVEM TPF Grant#2 September 2016 report by Marcus Holland-Moritz