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release/19.x: [ORC] Remove EDU from dependants list of dependencies before destroying. #109355

Merged
merged 1 commit into from
Sep 24, 2024
Merged

release/19.x: [ORC] Remove EDU from dependants list of dependencies before destroying. #109355

merged 1 commit into from
Sep 24, 2024

Commits on Sep 24, 2024

  1. [ORC] Remove EDU from dependants list of dependencies before destroying. 

    Dependant lists hold raw pointers back to EDUs that depend on them. We need to
remove these entries before destroying the EDU or we'll be left with a dangling
reference that can result in use-after-free bugs.

No testcase: This has only been observed in multi-threaded setups that
reproduce the issue inconsistently.

rdar://135403614
(cherry picked from commit 7034ec4)
    @lhames @tru
    lhames authored and tru committed Sep 24, 2024
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