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31 lines
639 B
Rust
31 lines
639 B
Rust
// run-pass
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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const fn test_me<T>(a: usize, b: usize) -> usize {
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if a < b {
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std::mem::size_of::<T>()
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} else {
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usize::MAX
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}
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}
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fn test_simple<T>() -> [u8; std::mem::size_of::<T>()]
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where
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[u8; std::mem::size_of::<T>()]: Sized,
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{
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[0; std::mem::size_of::<T>()]
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}
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fn test_with_args<T, const N: usize>() -> [u8; test_me::<T>(N, N + 1) + N]
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where
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[u8; test_me::<T>(N, N + 1) + N]: Sized,
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{
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[0; test_me::<T>(N, N + 1) + N]
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}
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fn main() {
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assert_eq!([0; 8], test_simple::<u64>());
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assert_eq!([0; 12], test_with_args::<u64, 4>());
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}
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