15 lines
551 B
Rust
15 lines
551 B
Rust
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#![feature(generic_const_items)]
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#![allow(incomplete_features)]
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// Check that we emit a *hard* error (not just a lint warning or error for example) for generic
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// parameter defaults on free const items since we are not limited by backward compatibility.
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#![allow(invalid_type_param_default)] // Should have no effect here.
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// FIXME(default_type_parameter_fallback): Consider reallowing them once they work properly.
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const NONE<T = ()>: Option<T> = None::<T>; //~ ERROR defaults for type parameters are only allowed
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fn main() {
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let _ = NONE;
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}
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