mirror of https://github.com/rust-lang/rust.git
26 lines
641 B
Rust
26 lines
641 B
Rust
//@ known-bug: #118952
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#![allow(non_camel_case_types)]
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#![feature(generic_const_exprs)]
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#![feature(specialization)]
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const DEFAULT_SMALL_VEC_INLINE_CAPACITY: usize = std::mem::size_of::<usize>() * 8;
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pub const fn tiny_vec_cap<T>() -> usize {
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return (DEFAULT_SMALL_VEC_INLINE_CAPACITY - 1) / std::mem::size_of::<T>()
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}
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pub struct TinyVec<T, const N: usize = {tiny_vec_cap::<T>()}>
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where [
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();
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(N * std::mem::size_of::<T>())
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- std::mem::size_of::<std::ptr::NonNull<T>>()
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- std::mem::size_of::<isize>()
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]: ,
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{
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data: isize //TinyVecData<T, N>,
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}
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pub fn main() {
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let t = TinyVec::<u8>::new();
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}
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