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8d64937dc2
As a temporary measure while a proper fix for `tests/ui/sized-hierarchy/incomplete-inference-issue-143992.rs` is implemented, make `MetaSized` obligations always hold. In effect, temporarily reverting the `sized_hierarchy` feature. This is a small change that can be backported.
20 lines
500 B
Rust
20 lines
500 B
Rust
//! Regression test for <https://github.com/rust-lang/rust/issues/137308>.
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//!
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//! This used to ICE in layout computation, because `<u8 as A>::B` fails to normalize
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//! due to the unconstrained param on the impl.
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#![feature(rustc_attrs)]
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#![crate_type = "lib"]
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trait A {
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const B: usize;
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}
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impl<C: ?Sized> A for u8 { //~ ERROR: the type parameter `C` is not constrained
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const B: usize = 42;
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}
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#[rustc_layout(debug)]
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struct S([u8; <u8 as A>::B]);
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//~^ ERROR: the type has an unknown layout
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