[Tarantool-patches] [PATCH luajit] Fix maxslots when recording BC_VARG, part 3.

[Igor Munkin]

Sergey,

I've checked the patchset into all long-term branches in
tarantool/luajit and bumped a new version in master, release/2.11 and
release/2.10.

On 15.08.23, Sergey Kaplun via Tarantool-patches wrote:
> From: Mike Pall <mike>
> 
> Thanks to Peter Cawley.
> 
> (cherry-picked from commit abb27c7771947e082c9d919d184ad5f5f03e2e32)
> 
> In case, when `BC_VARG` set the VARG slot to the non-top stack slot,
> `maxslot` value was unconditionally set to the destination slot, so some
> top slots may be omitted in the snapshot entry. Since these slots are
> omitted, they are not restored correctly, when restoring from snapshot
> for this side exit.
> 
> This patch adds the check for the aforementioned case, to avoid maxslot
> shrinking.
> 
> Sergey Kaplun:
> * added the description and the test for the problem
> 
> Part of tarantool/tarantool#8825
> ---
> 
> Branch: https://github.com/tarantool/luajit/tree/skaplun/lj-1046-fix-bc-varg-recording
> PR: https://github.com/tarantool/tarantool/pull/8986
> Related issues:
> * https://github.com/LuaJIT/LuaJIT/issues/1046
> * https://github.com/tarantool/tarantool/issues/8825
> 
>  src/lj_record.c                               | 12 +++-
>  .../lj-1046-fix-bc-varg-recording.test.lua    | 58 +++++++++++++++++++
>  2 files changed, 67 insertions(+), 3 deletions(-)
>  create mode 100644 test/tarantool-tests/lj-1046-fix-bc-varg-recording.test.lua
> 

<snipped>

> -- 
> 2.41.0
> 

-- 
Best regards,
IM