src/test/ui/nll/user-annotations/closure-substs.rs

   1 // Test that we enforce user-provided type annotations on closures.
   2
   3 fn foo<'a>() {
   4     // Here `x` is free in the closure sig:
   5     |x: &'a i32| -> &'static i32 {
   6         return x; //~ ERROR lifetime may not live long enough
   7     };
   8 }
   9
  10 fn foo1() {
  11     // Here `x` is bound in the closure sig:
  12     |x: &i32| -> &'static i32 {
  13         return x; //~ ERROR lifetime may not live long enough
  14     };
  15 }
  16
  17 fn bar<'a>() {
  18     // Here `x` is free in the closure sig:
  19     |x: &'a i32, b: fn(&'static i32)| {
  20         b(x); //~ ERROR lifetime may not live long enough
  21     };
  22 }
  23
  24 fn bar1() {
  25     // Here `x` is bound in the closure sig:
  26     |x: &i32, b: fn(&'static i32)| {
  27         b(x); //~ ERROR borrowed data escapes outside of closure
  28     };
  29 }
  30
  31 fn main() {}