41 lines
1.6 KiB
Rust
41 lines
1.6 KiB
Rust
//@ compile-flags:--cfg yes
|
|
|
|
fn f_lt<#[cfg(yes)] 'a: 'a, #[cfg(no)] T>() {}
|
|
fn f_ty<#[cfg(no)] 'a: 'a, #[cfg(yes)] T>() {}
|
|
|
|
type FnGood = for<#[cfg(yes)] 'a, #[cfg(no)] T> fn(); // OK
|
|
type FnBad = for<#[cfg(no)] 'a, #[cfg(yes)] T> fn();
|
|
//~^ ERROR only lifetime parameters can be used in this context
|
|
|
|
type PolyGood = dyn for<#[cfg(yes)] 'a, #[cfg(no)] T> Copy; // OK
|
|
type PolyBad = dyn for<#[cfg(no)] 'a, #[cfg(yes)] T> Copy;
|
|
//~^ ERROR only lifetime parameters can be used in this context
|
|
|
|
struct WhereGood where for<#[cfg(yes)] 'a, #[cfg(no)] T> u8: Copy; // OK
|
|
struct WhereBad where for<#[cfg(no)] 'a, #[cfg(yes)] T> u8: Copy;
|
|
//~^ ERROR only lifetime parameters can be used in this context
|
|
|
|
fn f_lt_no<#[cfg_attr(no, unknown)] 'a>() {} // OK
|
|
fn f_lt_yes<#[cfg_attr(yes, unknown)] 'a>() {}
|
|
//~^ ERROR cannot find attribute `unknown` in this scope
|
|
fn f_ty_no<#[cfg_attr(no, unknown)] T>() {} // OK
|
|
fn f_ty_yes<#[cfg_attr(yes, unknown)] T>() {}
|
|
//~^ ERROR cannot find attribute `unknown` in this scope
|
|
|
|
type FnNo = for<#[cfg_attr(no, unknown)] 'a> fn(); // OK
|
|
type FnYes = for<#[cfg_attr(yes, unknown)] 'a> fn();
|
|
//~^ ERROR cannot find attribute `unknown` in this scope
|
|
|
|
type PolyNo = dyn for<#[cfg_attr(no, unknown)] 'a> Copy; // OK
|
|
type PolyYes = dyn for<#[cfg_attr(yes, unknown)] 'a> Copy;
|
|
//~^ ERROR cannot find attribute `unknown` in this scope
|
|
|
|
struct WhereNo where for<#[cfg_attr(no, unknown)] 'a> u8: Copy; // OK
|
|
struct WhereYes where for<#[cfg_attr(yes, unknown)] 'a> u8: Copy;
|
|
//~^ ERROR cannot find attribute `unknown` in this scope
|
|
|
|
fn main() {
|
|
f_lt::<'static>();
|
|
f_ty::<u8>();
|
|
}
|