Rollup of 4 pull requests #102457
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Rollup of 4 pull requests #102457
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`__heap_base` and `__data_end` are exported for use by wasm-bindgen, which uses the wasm32-unknown-unknown target. On wasm32-wasi, as a step toward implementing the Canonical ABI, and as an aid to building speicalized WASI API polyfill wrappers, don't export `__heap_base` and `__data_end` on wasm32-wasi.
Since rust-lang#72889, the Rust wasm target doesn't use --passive-segments, so remove the `--export=__wasm_init_memory`. As documented in the [tool-conventions Linking convention], `__wasm_init_memory` is not intended to be exported. [tool-conventions Linking convention]: https://github.com/WebAssembly/tool-conventions/blob/7c064f304858f67ebf22964a84b7e9658e29557a/Linking.md#shared-memory-and-passive-segments
Fixes a regression caused by 8846c08, where a header's top margin used to be collapsed, but isn't any more.
…tmcm
Add negation methods for signed non-zero integers.
Performing negation with defined wrapping semantics (such as `wrapping_neg()`) on a non-zero integer currently requires unpacking to a primitive and re-wrapping. Since negation of non-zero signed integers always produces a non-zero result, it is safe to implement the various `*_neg()` methods for `NonZeroI{N}`.
I'm not sure what to do about the `#[unstable(..., issue = "none")]` here -- should I file a tracking issue, or is that handled by the Rust dev team?
ACP: rust-lang/libs-team#105
…port-heap-base, r=davidtwco Don't export `__heap_base` and `__data_end` on wasm32-wasi. `__heap_base` and `__data_end` are exported for use by wasm-bindgen, which uses the wasm32-unknown-unknown target. On wasm32-wasi, as a step toward implementing the Canonical ABI, and as an aid to building speicalized WASI API polyfill wrappers, don't export `__heap_base` and `__data_end` on wasm32-wasi.
…it-memory, r=nagisa Don't export `__wasm_init_memory` on WebAssembly. Since rust-lang#72889, the Rust wasm target doesn't use --passive-segments, so remove the `--export=__wasm_init_memory`. As documented in the [tool-conventions Linking convention], `__wasm_init_memory` is not intended to be exported. [tool-conventions Linking convention]: https://github.com/WebAssembly/tool-conventions/blob/7c064f304858f67ebf22964a84b7e9658e29557a/Linking.md#shared-memory-and-passive-segments
… r=jsha rustdoc: cut margin-top from first header in docblock Fixes a regression caused by 8846c08, where a header's top margin used to be collapsed, but isn't any more. ## Before  ## After 
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@bors r+ rollup=never p=4 |
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Created a bigger rollup in #102471 since this has sat in the queue for a long time |
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Successful merges:
__heap_baseand__data_endon wasm32-wasi. #102385 (Don't export__heap_baseand__data_endon wasm32-wasi.)__wasm_init_memoryon WebAssembly. #102426 (Don't export__wasm_init_memoryon WebAssembly.)Failed merges:
r? @ghost
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