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Build # 7875206723

Build Type

push

github

Committed by igormunkin

Commit Message

Consider slots used by upvalues in use-def analysis.

Reported by XmiliaH.

(cherry picked from commit 3a654999c)

`snap_usedef()` analysis doesn't check slots for child upvalues of the
currently recorded function in use-def analysis. Hence, such slots may
be considered unused and not stored in the snapshot. So on snapshot
restoration, values from these slots may be lost.

This patch adds a marking for all such local upvalues.

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

Part of tarantool/tarantool#9595

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