src/test/ui/unboxed-closures/unboxed-closures-wrong-abi.stderr

   1 error[E0277]: expected a `std::ops::Fn<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
   2   --> $DIR/unboxed-closures-wrong-abi.rs:12:21
   3    |
   4 LL | fn call_it<F:Fn(&isize)->isize>(_: &F, _: isize) -> isize { 0 }
   5    |              ----------------- required by this bound in `call_it`
   6 ...
   7 LL |     let x = call_it(&square, 22);
   8    |                     ^^^^^^^ expected an `Fn<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
   9    |
  10    = help: the trait `for<'r> std::ops::Fn<(&'r isize,)>` is not implemented for `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  11
  12 error[E0277]: expected a `std::ops::FnOnce<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  13   --> $DIR/unboxed-closures-wrong-abi.rs:12:21
  14    |
  15 LL | fn call_it<F:Fn(&isize)->isize>(_: &F, _: isize) -> isize { 0 }
  16    |                          ----- required by this bound in `call_it`
  17 ...
  18 LL |     let x = call_it(&square, 22);
  19    |                     ^^^^^^^ expected an `FnOnce<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  20    |
  21    = help: the trait `std::ops::FnOnce<(&isize,)>` is not implemented for `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  22
  23 error[E0277]: expected a `std::ops::FnMut<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  24   --> $DIR/unboxed-closures-wrong-abi.rs:18:25
  25    |
  26 LL | fn call_it_mut<F:FnMut(&isize)->isize>(_: &mut F, _: isize) -> isize { 0 }
  27    |                  -------------------- required by this bound in `call_it_mut`
  28 ...
  29 LL |     let y = call_it_mut(&mut square, 22);
  30    |                         ^^^^^^^^^^^ expected an `FnMut<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  31    |
  32    = help: the trait `for<'r> std::ops::FnMut<(&'r isize,)>` is not implemented for `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  33
  34 error[E0277]: expected a `std::ops::FnOnce<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  35   --> $DIR/unboxed-closures-wrong-abi.rs:18:25
  36    |
  37 LL | fn call_it_mut<F:FnMut(&isize)->isize>(_: &mut F, _: isize) -> isize { 0 }
  38    |                                 ----- required by this bound in `call_it_mut`
  39 ...
  40 LL |     let y = call_it_mut(&mut square, 22);
  41    |                         ^^^^^^^^^^^ expected an `FnOnce<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  42    |
  43    = help: the trait `std::ops::FnOnce<(&isize,)>` is not implemented for `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  44
  45 error[E0277]: expected a `std::ops::FnOnce<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  46   --> $DIR/unboxed-closures-wrong-abi.rs:24:26
  47    |
  48 LL | fn call_it_once<F:FnOnce(&isize)->isize>(_: F, _: isize) -> isize { 0 }
  49    |                                   ----- required by this bound in `call_it_once`
  50 ...
  51 LL |     let z = call_it_once(square, 22);
  52    |                          ^^^^^^ expected an `FnOnce<(&isize,)>` closure, found `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  53    |
  54    = help: the trait `std::ops::FnOnce<(&isize,)>` is not implemented for `for<'r> extern "C" fn(&'r isize) -> isize {square}`
  55
  56 error: aborting due to 5 previous errors
  57
  58 For more information about this error, try `rustc --explain E0277`.