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Don't ICE when encountering dyn* in statics or consts #109921

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Apr 6, 2023
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Don't ICE when encountering dyn* in statics or consts #109921

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2 changes: 1 addition & 1 deletion compiler/rustc_const_eval/src/transform/check_consts/check.rs
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Expand Up @@ -553,7 +553,7 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> {
}

Rvalue::Cast(CastKind::DynStar, _, _) => {
unimplemented!()
// `dyn*` coercion is implemented for CTFE.
}

Rvalue::Cast(_, _, _) => {}
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10 changes: 10 additions & 0 deletions tests/ui/dyn-star/const-and-static.rs
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@@ -0,0 +1,10 @@
// check-pass
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Is check-pass enough to run constant evaluation?


#![feature(dyn_star)]
//~^ WARN the feature `dyn_star` is incomplete

const C: dyn* Send + Sync = &();

static S: dyn* Send + Sync = &();

fn main() {}
11 changes: 11 additions & 0 deletions tests/ui/dyn-star/const-and-static.stderr
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@@ -0,0 +1,11 @@
warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes
--> $DIR/const-and-static.rs:3:12
|
LL | #![feature(dyn_star)]
| ^^^^^^^^
|
= note: see issue #102425 <https://github.com/rust-lang/rust/issues/102425> for more information
= note: `#[warn(incomplete_features)]` on by default

warning: 1 warning emitted