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de-RFC: Remove unsized_locals #3829

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f951ce6
de-RFC: Remove unsized_locals
Noratrieb Jun 2, 2025
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Typos
Noratrieb Jun 2, 2025
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unsized_fn_params
Noratrieb Jun 4, 2025
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talk about recursion
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move
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link MIR semantics
Noratrieb Jun 4, 2025
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unaccept 1909
Noratrieb Jun 4, 2025
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Linus
Noratrieb Jun 4, 2025
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typo
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Update text/1909-unsized-rvalues.md
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Update text/3829-de-rfc-unsized-locals.md
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5 changes: 5 additions & 0 deletions text/3829-de-rfc-unsized-locals.md
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Expand Up @@ -94,6 +94,10 @@ The `unsized_locals` feature is removed from the compiler and [RFC 1909] is offi

If someone wants to bring dynamic stack allocation into Rust again, a new design will have to be designed from scratch, considering all the problems laid out in this RFC.

This does not have a negative effect on features that feature unsized values in function signatures like `unsized_fn_params`.
Their behavior is much more clear and they are implemented differently.
In fact, `unsized_fn_params` is currently needed in the standard library to implement `Box<dyn FnOnce()> as FnOnce()>`.

# Drawforwards
[drawforwards]: #drawforwards

Expand Down Expand Up @@ -130,6 +134,7 @@ The best prior art for this removal is of course the inspiration for the de-RFC
# Unresolved answers
[unresolved-answers]: #unresolved-answers


None

# Future probabilities
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