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authorbors <bors@rust-lang.org>2023-06-28 10:13:31 +0000
committerbors <bors@rust-lang.org>2023-06-28 10:13:31 +0000
commit021604431c7eeeaeeb14d741c5623fc5bdb6c5f8 (patch)
treef038c54f13c8f8f16ceaa45302946f73ae4fd661 /tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-unwind.diff
parent891331c74fb0e3d61b3676289a689404063e2a16 (diff)
parentd026479ba6084d00b900fed3c5c06363d605e68e (diff)
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Auto merge of #15125 - lowr:patch/rustc_coinductive, r=Veykril
internal: support `#[rustc_coinductive]`

rust-lang/rust#100386 changed the trait solver so that `Sized` is treated as coinductive trait, just like auto traits. This is now controlled by the perma-unstable `#[rustc_coinductive]` attribute (rust-lang/rust#108033), which this PR adds support for.

In practice, I don't think this matters much if at all. Currently we don't give chalk enough information so chalk cannot precisely (dis)prove `Sized` bounds.
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