interpret/memory: fix safety comment for large array memset optimization #120387
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Some changes occurred to the CTFE / Miri engine cc @rust-lang/miri |
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@bors r+ rollup |
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Jan 29, 2024
| // that this read at type `u8` is OK -- it must be an initialized byte. | ||
| if size_in_bytes == 1 { | ||
| debug_assert!(num_copies >= 1); // we already handled the zero-sized cases above. | ||
| // SAFETY: `src_bytes` would be read from anyway by `copy` below (num_copies >= 1). | ||
| let value = *src_bytes; | ||
| dest_bytes.write_bytes(value, (size * num_copies).bytes_usize()); |
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This line seems more dangerous and we don't have a comment on it at all 😆 I'll try to add one this week
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…llaumeGomez Rollup of 18 pull requests Successful merges: - rust-lang#119123 (Add triagebot mentions entry for simd intrinsics) - rust-lang#119991 (Reject infinitely-sized reads from io::Repeat) - rust-lang#120172 (bootstrap: add more unit tests) - rust-lang#120250 (rustdoc: Prevent JS injection from localStorage) - rust-lang#120376 (Update codegen test for LLVM 18) - rust-lang#120387 (interpret/memory: fix safety comment for large array memset optimization) - rust-lang#120400 (Bound errors span label cleanup) - rust-lang#120402 (Make the coroutine def id of an async closure the child of the closure def id) - rust-lang#120403 (Add instructions of how to use pre-vendored 'rustc-src') - rust-lang#120424 (raw pointer metadata API: data address -> data pointer) - rust-lang#120425 (Remove unnecessary unit returns in query declarations) - rust-lang#120439 (Move UI issue tests to subdirectories) - rust-lang#120443 (Fixes footnote handling in rustdoc) - rust-lang#120452 (std: Update documentation of seek_write on Windows) - rust-lang#120460 (Be more careful about interpreting a label/lifetime as a mistyped char literal.) - rust-lang#120464 (Add matthewjasper to some review groups) - rust-lang#120467 (Update books) - rust-lang#120488 (Diagnostic lifetimes cleanups) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#120387 - RalfJung:large-array-followup, r=oli-obk interpret/memory: fix safety comment for large array memset optimization Also fix the doc comment for `check_and_deref_ptr`.
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Also fix the doc comment for
check_and_deref_ptr.