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Add non-determinism to algebraic intrinsics. #4289

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bjoernager opened this issue Apr 23, 2025 · 0 comments
Open

Add non-determinism to algebraic intrinsics. #4289

bjoernager opened this issue Apr 23, 2025 · 0 comments
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A-intrinsics Area: Affects out implementation of Rust intrinsics C-enhancement Category: a PR with an enhancement or an issue tracking an accepted enhancement

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bjoernager commented Apr 23, 2025 •
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Tracking issue: rust-lang/rust#136469

Since rust-lang/rust#140172, the result of a call to any of the algebraic_add, algebraic_sub, algebraic_mul, algebraic_div, or algebraic_rem intrinsics has been deterministic in Miri.

Valid programmes do not depend on these computations being exact, thus Miri should add some non-determinism so that any such dependence is more likely to be caught.
@RalfJung RalfJung added C-enhancement Category: a PR with an enhancement or an issue tracking an accepted enhancement A-intrinsics Area: Affects out implementation of Rust intrinsics labels Apr 23, 2025
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