mirror of https://github.com/rust-lang/rust
38 lines
1004 B
Rust
38 lines
1004 B
Rust
//@ known-bug: #110395
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//
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// This test is complement to the test in issue-73976-polymorphic.rs.
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// In that test we ensure that polymorphic use of type_id and type_name in patterns
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// will be properly rejected. This test will ensure that monomorphic use of these
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// would not be wrongly rejected in patterns.
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#![feature(const_type_id)]
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#![feature(const_type_name)]
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#![feature(const_trait_impl)]
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use std::any::{self, TypeId};
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pub struct GetTypeId<T>(T);
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impl<T: 'static> GetTypeId<T> {
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pub const VALUE: TypeId = TypeId::of::<T>();
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}
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const fn check_type_id<T: 'static>() -> bool {
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GetTypeId::<T>::VALUE == GetTypeId::<usize>::VALUE
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}
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pub struct GetTypeNameLen<T>(T);
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impl<T: 'static> GetTypeNameLen<T> {
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pub const VALUE: usize = any::type_name::<T>().len();
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}
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const fn check_type_name_len<T: 'static>() -> bool {
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matches!(GetTypeNameLen::<T>::VALUE, GetTypeNameLen::<usize>::VALUE)
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}
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fn main() {
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assert!(check_type_id::<usize>());
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assert!(check_type_name_len::<usize>());
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}
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