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authorbors <bors@rust-lang.org>2022-04-29 20:00:47 +0000
committerbors <bors@rust-lang.org>2022-04-29 20:00:47 +0000
commita707f401074bc769bab4efb2bfdde7f6c5a4068d (patch)
tree8146935aee88552868c76b369281cf69fc71b74a /compiler/rustc_codegen_gcc
parent1c8966e5e9dc099b55206f34af81242d03bdb413 (diff)
parent67ce547f474fbe34e8aafe4bfc284c3856673744 (diff)
downloadrust-a707f401074bc769bab4efb2bfdde7f6c5a4068d.tar.gz
rust-a707f401074bc769bab4efb2bfdde7f6c5a4068d.zip
Auto merge of #95819 - oli-obk:mir_can't_hold_all_these_lifetimes, r=estebank
Enforce Copy bounds for repeat elements while considering lifetimes

fixes https://github.com/rust-lang/rust/issues/95477

this is a breaking change in order to fix a soundness bug.

Before this PR we only checked whether the repeat element type had an `impl Copy`, but not whether that impl also had the appropriate lifetimes. E.g. if the impl was for `YourType<'static>` and not a general `'a`, then copying any type other than a `'static` one should have been rejected, but wasn't.

r? `@lcnr`
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