33 lines
744 B
Rust
33 lines
744 B
Rust
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// Ensure that we don't get a cycle error from trying to determine whether an
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// opaque type implements `Freeze` in safety checking, when it doesn't matter.
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// check-pass
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#![feature(rustc_attrs)]
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struct AnyValue<T>(T);
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// No need to check for `Freeze` here, there's no
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// `rustc_layout_scalar_valid_range_start` involved.
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fn not_restricted(c: bool) -> impl Sized {
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if c {
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let x = AnyValue(not_restricted(false));
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&x.0;
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}
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2u32
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}
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#[rustc_layout_scalar_valid_range_start(1)]
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struct NonZero<T>(T);
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// No need to check for `Freeze` here, we're not borrowing the field.
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fn not_field(c: bool) -> impl Sized {
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if c {
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let x = unsafe { NonZero(not_field(false)) };
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&x;
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}
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5u32
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}
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fn main() {}
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