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Test for drains that shift the tail, when inline #271

Merged
merged 1 commit into from Jan 3, 2022
Merged

Test for drains that shift the tail, when inline #271

merged 1 commit into from Jan 3, 2022

Commits on Jan 3, 2022

  1. Test for drains that shift the tail, when inline 

    Previously, the test suite only had one trip through the tail-shifting
code in Drain::drop, and that is in the heap state.
In the current implementation, a tail-shifting drain while in the inline
state produces potentially dangerous aliasing which is currently
accepted by default Miri and rejected with -Ztrack-raw-pointers.

Adding this test case ensures that if this ever becomes an actual
problem it will be easy to find.
    @saethlin
    saethlin committed Jan 3, 2022
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