err: &mut Diagnostic,
) {
let found_args = match found.kind() {
- ty::FnPtr(f) => f.inputs().skip_binder().iter(),
+ ty::FnPtr(f) => infcx.replace_bound_vars_with_placeholders(*f).inputs().iter(),
kind => {
span_bug!(span, "found was converted to a FnPtr above but is now {:?}", kind)
}
};
let expected_args = match expected.kind() {
- ty::FnPtr(f) => f.inputs().skip_binder().iter(),
+ ty::FnPtr(f) => infcx.replace_bound_vars_with_placeholders(*f).inputs().iter(),
kind => {
span_bug!(span, "expected was converted to a FnPtr above but is now {:?}", kind)
}
--- /dev/null
+use std::cell::RefCell;
+use std::collections::HashMap;
+use std::rc::Rc;
+
+pub struct Trader<'a> {
+ closure: Box<dyn Fn(&mut Trader) + 'a>,
+}
+
+impl<'a> Trader<'a> {
+ pub fn new() -> Self {
+ Trader {
+ closure: Box::new(|_| {}),
+ }
+ }
+ pub fn set_closure(&mut self, function: impl Fn(&mut Trader) + 'a) {
+ //foo
+ }
+}
+
+fn main() {
+ let closure = |trader : Trader| {
+ println!("Woooosh!");
+ };
+
+ let mut trader = Trader::new();
+ trader.set_closure(closure);
+ //~^ ERROR type mismatch in closure arguments
+}
--- /dev/null
+error[E0631]: type mismatch in closure arguments
+ --> $DIR/late-bound-in-borrow-closure-sugg.rs:26:24
+ |
+LL | let closure = |trader : Trader| {
+ | ----------------- found signature defined here
+...
+LL | trader.set_closure(closure);
+ | ----------- ^^^^^^^ expected due to this
+ | |
+ | required by a bound introduced by this call
+ |
+ = note: expected closure signature `for<'a, 'b> fn(&'a mut Trader<'b>) -> _`
+ found closure signature `for<'a> fn(Trader<'a>) -> _`
+note: required by a bound in `Trader::<'a>::set_closure`
+ --> $DIR/late-bound-in-borrow-closure-sugg.rs:15:50
+ |
+LL | pub fn set_closure(&mut self, function: impl Fn(&mut Trader) + 'a) {
+ | ^^^^^^^^^^^^^^^ required by this bound in `Trader::<'a>::set_closure`
+help: consider borrowing the argument
+ |
+LL | let closure = |trader : &Trader| {
+ | +
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0631`.