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Allow borrowed interface types #3040

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jruderman opened this issue Jul 27, 2012 · 1 comment
Closed

Allow borrowed interface types #3040

jruderman opened this issue Jul 27, 2012 · 1 comment
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A-lifetimes Area: Lifetimes / regions A-type-system Area: Type system I-slow Issue: Problems and improvements with respect to performance of generated code.
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old 1.0 milestone

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@jruderman
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Seems weird that interface types are always reference-counted. For example, there could also be a "borrowed" variant, which contains a pointer to a borrowed object and a pointer to a vtable.

(It's possible I'm already confused about the distinction between "how the interface type is allocated" and "how the concrete type is allocated".)
@nikomatsakis
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dup of #1567. In any case, the plan is to have &iface, @iface, and ~iface eventually.

bors pushed a commit to rust-lang-ci/rust that referenced this issue May 15, 2021
@topecongiro
Add a test for rust-lang#3040
ec32c96
RalfJung pushed a commit to RalfJung/rust that referenced this issue Aug 31, 2023
@bors
Auto merge of rust-lang#3040 - RalfJung:track_caller, r=RalfJung
63bf240 
add tests for track_caller in closures and generators

taken from rust-lang#87064
celinval added a commit to celinval/rust-dev that referenced this issue Jun 4, 2024
@celinval
Upgrade rust toolchain to 2024-02-17 (rust-lang#3040)
c2dc489 
Upgrade toolchain to 2024-02-17. Relevant PR:

- rust-lang#120500
- rust-lang#100603

Fixes model-checking/kani#87
Fixes model-checking/kani#3034
Fixes model-checking/kani#3037
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A-lifetimes Area: Lifetimes / regions A-type-system Area: Type system I-slow Issue: Problems and improvements with respect to performance of generated code.
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@nikomatsakis @jruderman