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Fix soundness hole in Ref::into_ref and into_mut #721

Merged
merged 1 commit into from
Dec 13, 2023
Merged

Fix soundness hole in Ref::into_ref and into_mut #721

merged 1 commit into from
Dec 13, 2023

Commits on Dec 13, 2023

  1. Fix soundness hole in Ref::into_ref and into_mut 

    This commit implements the fix for #716 which will be released as a new
version in version trains 0.2, 0.3, 0.4, 0.5, 0.6, and 0.7. See #716 for
a description of the soundness hole and an explanation of why this fix
is chosen.

Unfortunately, due to dtolnay/trybuild#241, there is no way for us to
write a UI test that will detect a failure post-monomorphization, which
is when the code implemented in this change is designed to fail. I have
manually verified that unsound uses of these APIs now fail to compile.

Release 0.7.31.
    @joshlf
    joshlf committed Dec 13, 2023
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