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4882ea4b3c
In some contexts, const expressions are OK. Add a `here` to the error message to clarify this.
20 lines
599 B
Rust
20 lines
599 B
Rust
//! Regression test for <https://github.com/rust-lang/rust/issues/79429>.
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//@ revisions: full min
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#![cfg_attr(full, feature(generic_const_exprs))]
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#![cfg_attr(full, allow(incomplete_features))]
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struct X<const S: usize>;
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impl<const S: usize> X<S> {
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const LEN: usize = S + 1; // `S + 1` is a valid const expression in this context.
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}
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struct Y<const S: usize> {
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stuff: [u8; { S + 1 }], // `S + 1` is NOT a valid const expression in this context.
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//[min]~^ ERROR generic parameters may not be used in const operations
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//[full]~^^ ERROR unconstrained generic constant
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}
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fn main() {}
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