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90c0381272
In Rust, it is UB if a slice is mutated while borrowed except through
the slice itself, and it is also UB if a mutable slice is read while
borrowed. The op macro allows borrowing an `ArrayBuffer{,View}` as a
memory slice for the duration of an op, but this is not sound for async
ops, since the `ArrayBuffer` could be accessed from JS during the await
points. This PR therefore disallows such automatic borrowing only for
async ops.
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
24 lines
446 B
Rust
24 lines
446 B
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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use deno_ops::op;
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#[op]
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fn sync_test(slice: &mut [u32]) {
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//
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}
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#[op]
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async fn async_test(slice: &[u8]) {
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// Memory slices are not allowed in async ops.
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}
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#[op]
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fn async_test2(slice: &mut [u8]) -> impl Future<Output = ()> {
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// Memory slices are not allowed in async ops, even when not implemented as an
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// async function.
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async {}
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}
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fn main() {
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// pass
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}
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