interpret/allocation: fix aliasing issue in interpreter and refactor getters a bit #122537
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Some changes occurred to the CTFE / Miri engine cc @rust-lang/miri Some changes occurred to the CTFE / Miri engine cc @rust-lang/miri |
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The Miri subtree was changed cc @rust-lang/miri |
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…getters a bit - rename mutating functions to be more scary - add a new raw bytes getter
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@bors r+ rollup |
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…li-obk
interpret/allocation: fix aliasing issue in interpreter and refactor getters a bit
That new raw getter will be needed to let Miri pass pointers to natively executed FFI code ("extern-so" mode).
While doing that I realized our get_bytes_mut are named less scary than get_bytes_unchecked so I rectified that. Also I realized `mem_copy_repeatedly` would break if we called it for multiple overlapping copies so I made sure this does not happen.
And I realized that we are actually [violating Stacked Borrows in the interpreter](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/I.20think.20Miri.20violates.20Stacked.20Borrows.20.F0.9F.99.88).^^ That was introduced in rust-lang#87777.
r? `@oli-obk`
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…li-obk
interpret/allocation: fix aliasing issue in interpreter and refactor getters a bit
That new raw getter will be needed to let Miri pass pointers to natively executed FFI code ("extern-so" mode).
While doing that I realized our get_bytes_mut are named less scary than get_bytes_unchecked so I rectified that. Also I realized `mem_copy_repeatedly` would break if we called it for multiple overlapping copies so I made sure this does not happen.
And I realized that we are actually [violating Stacked Borrows in the interpreter](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/I.20think.20Miri.20violates.20Stacked.20Borrows.20.F0.9F.99.88).^^ That was introduced in rust-lang#87777.
r? ``@oli-obk``
This was referenced Mar 22, 2024
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#121619 (Experimental feature postfix match) - rust-lang#122370 (Gracefully handle `AnonConst` in `diagnostic_hir_wf_check()`) - rust-lang#122537 (interpret/allocation: fix aliasing issue in interpreter and refactor getters a bit) - rust-lang#122542 (coverage: Clean up marker statements that aren't needed later) - rust-lang#122800 (Add `NonNull::<[T]>::is_empty`.) - rust-lang#122820 (Stop using `<DefId as Ord>` in various diagnostic situations) - rust-lang#122847 (Suggest `RUST_MIN_STACK` workaround on overflow) - rust-lang#122855 (Fix Itanium mangling usizes) - rust-lang#122863 (add more ice tests ) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#122537 - RalfJung:interpret-allocation, r=oli-obk interpret/allocation: fix aliasing issue in interpreter and refactor getters a bit That new raw getter will be needed to let Miri pass pointers to natively executed FFI code ("extern-so" mode). While doing that I realized our get_bytes_mut are named less scary than get_bytes_unchecked so I rectified that. Also I realized `mem_copy_repeatedly` would break if we called it for multiple overlapping copies so I made sure this does not happen. And I realized that we are actually [violating Stacked Borrows in the interpreter](https://rust-lang.zulipchat.com/#narrow/stream/136281-t-opsem/topic/I.20think.20Miri.20violates.20Stacked.20Borrows.20.F0.9F.99.88).^^ That was introduced in rust-lang#87777. r? ```@oli-obk```
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…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#121619 (Experimental feature postfix match) - rust-lang#122370 (Gracefully handle `AnonConst` in `diagnostic_hir_wf_check()`) - rust-lang#122537 (interpret/allocation: fix aliasing issue in interpreter and refactor getters a bit) - rust-lang#122542 (coverage: Clean up marker statements that aren't needed later) - rust-lang#122800 (Add `NonNull::<[T]>::is_empty`.) - rust-lang#122820 (Stop using `<DefId as Ord>` in various diagnostic situations) - rust-lang#122847 (Suggest `RUST_MIN_STACK` workaround on overflow) - rust-lang#122855 (Fix Itanium mangling usizes) - rust-lang#122863 (add more ice tests ) r? `@ghost` `@rustbot` modify labels: rollup
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That new raw getter will be needed to let Miri pass pointers to natively executed FFI code ("extern-so" mode).
While doing that I realized our get_bytes_mut are named less scary than get_bytes_unchecked so I rectified that. Also I realized
mem_copy_repeatedlywould break if we called it for multiple overlapping copies so I made sure this does not happen.And I realized that we are actually violating Stacked Borrows in the interpreter.^^ That was introduced in #87777.
r? @oli-obk