mirror of https://github.com/rust-lang/rust
17 lines
418 B
Rust
17 lines
418 B
Rust
#![feature(core_intrinsics)]
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extern crate core;
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use core::intrinsics::discriminant_value;
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#[repr(usize)]
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enum MyWeirdOption<T> {
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None = 0,
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Some(T) = core::mem::size_of::<*mut T>(),
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//~^ ERROR generic parameters may not be used
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}
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fn main() {
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assert_eq!(discriminant_value(&MyWeirdOption::<()>::None), 0);
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assert_eq!(discriminant_value(&MyWeirdOption::Some(())), core::mem::size_of::<usize>());
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}
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