Add compile time checks for unchecked_shl/shr #53991
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rust-highfive
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oli-obk
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@bors r+ |
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📌 Commit 92dd526 has been approved by |
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This replicates the overflow check that binops also perform. I know miri also did this, but wouldn't it be better if instead we called binary_op_val and then checked the boolean it returns?
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@RalfJung, Yes, indeed. |
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@bors r+ |
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📌 Commit 43eb925 has been approved by |
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Awesome, thanks. :) @TimDiekmann would you like to also send a PR to miri to remove the now-dead code over there implementing the intrinsics you added on the rustc side? See rust-lang/miri#448 for a similar PR. |
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…s, r=oli-obk Add unchecked_shl/shr check for intrinsics to fix miri's test suit r? @RalfJung cc @oli-obk rust-lang#53697 broke miri's test suite as described in [this comment](rust-lang#53697 (comment)). This PR adds test for the `unchecked_shr/shl` for the intrinsics.
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Rollup of 17 pull requests Successful merges: - #53299 (Updated core/macros.rs to note it works in a no_std environment.) - #53376 (Cross reference io::copy and fs::copy in docs.) - #53455 (Individual docs for {from,to}_*_bytes) - #53550 (librustc_lint: In recursion warning, change 'recurring' to 'recursing') - #53860 (Migrate (some) of run-pass/ to ui) - #53874 (Implement Unpin for Box, Rc, and Arc) - #53895 (tidy: Cleanups and clippy warning fixes) - #53946 (Clarify `ManuallyDrop` docs) - #53948 (Minimized clippy test from when NLL disabled two-phase borrows) - #53959 (Add .git extension to submodule paths missing it) - #53966 (A few cleanups and minor improvements to mir/dataflow) - #53967 (propagate build.python into cmake) - #53979 (Remove `#[repr(transparent)]` from atomics) - #53991 (Add unchecked_shl/shr check for intrinsics to fix miri's test suit) - #53992 (migrate run-pass/borrowck to ui/run-pass) - #53994 (migrate run-pass/*/ to ui/run-pass) - #54023 (update clippy submodule)
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r? @RalfJung
cc @oli-obk
#53697 broke miri's test suite as described in this comment. This PR adds test for the
unchecked_shr/shlfor the intrinsics.