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#![allow(dead_code, non_camel_case_types)]
// Test that bounds on higher-kinded lifetime binders are rejected.
fn bar1<'a, 'b>(
x: &'a i32,
y: &'b i32,
f: for<'xa, 'xb: 'xa+'xa> fn(&'xa i32, &'xb i32) -> &'xa i32)
//~^ ERROR lifetime bounds cannot be used in this context
{
// If the bound in f's type would matter, the call below would (have to)
// be rejected.
f(x, y);
}
fn bar2<'a, 'b, F: for<'xa, 'xb: 'xa> Fn(&'xa i32, &'xb i32) -> &'xa i32>(
//~^ ERROR lifetime bounds cannot be used in this context
x: &'a i32,
y: &'b i32,
f: F)
{
// If the bound in f's type would matter, the call below would (have to)
// be rejected.
f(x, y);
}
fn bar3<'a, 'b, F>(
x: &'a i32,
y: &'b i32,
f: F)
where F: for<'xa, 'xb: 'xa> Fn(&'xa i32, &'xb i32) -> &'xa i32
//~^ ERROR lifetime bounds cannot be used in this context
{
// If the bound in f's type would matter, the call below would (have to)
// be rejected.
f(x, y);
}
fn bar4<'a, 'b, F>(
x: &'a i32,
y: &'b i32,
f: F)
where for<'xa, 'xb: 'xa> F: Fn(&'xa i32, &'xb i32) -> &'xa i32
//~^ ERROR lifetime bounds cannot be used in this context
{
// If the bound in f's type would matter, the call below would (have to)
// be rejected.
f(x, y);
}
struct S1<F: for<'xa, 'xb: 'xa> Fn(&'xa i32, &'xb i32) -> &'xa i32>(F);
//~^ ERROR lifetime bounds cannot be used in this context
struct S2<F>(F) where F: for<'xa, 'xb: 'xa> Fn(&'xa i32, &'xb i32) -> &'xa i32;
//~^ ERROR lifetime bounds cannot be used in this context
struct S3<F>(F) where for<'xa, 'xb: 'xa> F: Fn(&'xa i32, &'xb i32) -> &'xa i32;
//~^ ERROR lifetime bounds cannot be used in this context
struct S_fnty(for<'xa, 'xb: 'xa> fn(&'xa i32, &'xb i32) -> &'xa i32);
//~^ ERROR lifetime bounds cannot be used in this context
type T1 = Box<dyn for<'xa, 'xb: 'xa> Fn(&'xa i32, &'xb i32) -> &'xa i32>;
//~^ ERROR lifetime bounds cannot be used in this context
fn main() {
let _ : Option<for<'xa, 'xb: 'xa> fn(&'xa i32, &'xb i32) -> &'xa i32> = None;
//~^ ERROR lifetime bounds cannot be used in this context
let _ : Option<Box<dyn for<'xa, 'xb: 'xa> Fn(&'xa i32, &'xb i32) -> &'xa i32>> = None;
//~^ ERROR lifetime bounds cannot be used in this context
}
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