(This report covers two months) This is my monthly report on work done during Jan and Feb 2023 covered by my TPF perl core maintenance grant. I mainly continued work on making the stack reference counted. I have now reached a point where, on a perl built with the non-default PERL_RC_STACK define, perl uses a reference-counted stack, and all tests pass (including those from the bundled dist/ and cpan/) distributions). None of those distributions required any changes to work in the new reference-counted environment, which is encouraging. This initial work has been made available as PR #20858. I'm not expecting to merge this into blead until some time after 5.38.0 has been released. In a default (non-PERL_RC_STACK) build, perl shows no noticeable performance degradation, and didn't break any of CPAN modules which various people tested it against. On an RC build, the test suite is currently about 20% slower, and some breakage has been spotted. The latter is what I am currently looking into. The slowdown is likely largely caused by the temporary wrapping of the old-style PP functions in the perl core. My next major work on this feature will be to unwrap such functions and modify them to work directly with a reference-counted stack. I expect most performance losses to be regained at that point. SUMMARY: 3:33 fix croak.t class leak 137:22 make stack reference counted 27:34 process p5p mailbox 5:13 review PR #20677: fixup many regexp bugs ------ 173:42 TOTAL (HH::MM) -- "But Sidley Park is already a picture, and a most amiable picture too. The slopes are green and gentle. The trees are companionably grouped at intervals that show them to advantage. The rill is a serpentine ribbon unwound from the lake peaceably contained by meadows on which the right amount of sheep are tastefully arranged." -- Lady Croom, "Arcadia"Thread Next