Drop tracking: track borrows of projections #93751
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Previous efforts to ignore partially consumed values meant we were also not considering borrows of a projection. This led to cases where we'd miss borrowed types which MIR expected to be there, leading to ICEs.
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Thanks! Drop tracking remains disabled by default, so this should be fine to include in a rollup. @bors r+ rollup=always |
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The only commit from #93313 included here is the one adding the drop tracking flag, which is necessary for testing purposes. I don't think it requires an additional review, especially that the general direction has been discussed on the latest wg-async triage meeting. |
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Feb 9, 2022
Rollup of 7 pull requests Successful merges: - rust-lang#93445 (Add From<u8> for ExitCode) - rust-lang#93694 (rustdoc: tweak line spacing and paragraph spacing for accessibility) - rust-lang#93735 (Stabilize int_abs_diff in 1.60.0.) - rust-lang#93746 (Remove defaultness from ImplItem.) - rust-lang#93748 (rustc_query_impl: reduce visibility of some modules/fn's) - rust-lang#93751 (Drop tracking: track borrows of projections) - rust-lang#93781 (update `ty::TyKind` documentation) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Previous efforts to ignore partially consumed values meant we were also not considering borrows of a projection. This led to cases where we'd miss borrowed types which MIR expected to be there, leading to ICEs.
This PR also includes the
-Zdrop-trackingflag from #93313. If that PR lands first, I'll rebase to drop the commit from this one.Fixes #93648