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Build # 6303180813

Build Type

push

github

Committed by igormunkin

Commit Message

Handle table unsinking in the presence of IRFL_TAB_NOMM.

Reported by Sergey Kaplun.

(cherry-picked from commit 0ef51b495)

Table `NEWREF` storage for non-constant keys also emits `FREF` IR with
`IRFL_TAB_NOMM` to invalidate the metamethod cache. When table creation
and `NEWREF` are sinked, the corresponding `FSTORE` is sinked too and
should be restored on trace exit. However, `snap_unsink()` doesn't
expect anything except `IRFL_TAB_META` as the second operand of `FREF`,
so the corresponding assertion fails.

This patch adds a switch-case statement to handle the `IRFL_TAB_NOMM`
case. Since `FREF` with `IRFL_TAB_NOMM` always follows some hash store,
we can avoid a duplication of the cache invalidation, so this case just
does nothing.

Sergey Kaplun:
* added the description and the test for the problem

Part of tarantool/tarantool#8825

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