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#![feature(inline_const, const_type_id)] | ||
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use std::alloc::Layout; | ||
use std::any::TypeId; | ||
use std::mem::transmute; | ||
use std::ptr::drop_in_place; | ||
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pub struct VTable { | ||
layout: Layout, | ||
type_id: TypeId, | ||
drop_in_place: unsafe fn(*mut ()), | ||
} | ||
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impl VTable { | ||
pub fn new<T>() -> &'static Self { | ||
const { | ||
//~^ ERROR the parameter type `T` may not live long enough | ||
//~| ERROR the parameter type `T` may not live long enough | ||
&VTable { | ||
layout: Layout::new::<T>(), | ||
type_id: TypeId::of::<T>(), | ||
drop_in_place: unsafe { | ||
transmute::<unsafe fn(*mut T), unsafe fn(*mut ())>(drop_in_place::<T>) | ||
}, | ||
} | ||
} | ||
} | ||
} | ||
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fn main() {} |
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error[E0310]: the parameter type `T` may not live long enough | ||
--> $DIR/issue-102117.rs:16:9 | ||
| | ||
LL | / const { | ||
LL | | | ||
LL | | | ||
LL | | &VTable { | ||
... | | ||
LL | | } | ||
LL | | } | ||
| |_________^ ...so that the type `T` will meet its required lifetime bounds | ||
| | ||
help: consider adding an explicit lifetime bound... | ||
| | ||
LL | pub fn new<T: 'static>() -> &'static Self { | ||
| +++++++++ | ||
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error[E0310]: the parameter type `T` may not live long enough | ||
--> $DIR/issue-102117.rs:16:9 | ||
| | ||
LL | / const { | ||
LL | | | ||
LL | | | ||
LL | | &VTable { | ||
... | | ||
LL | | } | ||
LL | | } | ||
| |_________^ ...so that the type `T` will meet its required lifetime bounds | ||
| | ||
help: consider adding an explicit lifetime bound... | ||
| | ||
LL | pub fn new<T: 'static>() -> &'static Self { | ||
| +++++++++ | ||
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error: aborting due to 2 previous errors | ||
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For more information about this error, try `rustc --explain E0310`. |