error[E0261]: use of undeclared lifetime name `'a`
  --> $DIR/generic-extern-lifetime.rs:6:26
   |
LL |     pub fn life2<'b>(x: &'a i32, y: &'b i32);
   |                  -       ^^ undeclared lifetime
   |                  |
   |                  help: consider introducing lifetime `'a` here: `'a,`

error[E0261]: use of undeclared lifetime name `'a`
  --> $DIR/generic-extern-lifetime.rs:8:37
   |
LL |     pub fn life4<'b>(x: for<'c> fn(&'a i32));
   |                                     ^^ undeclared lifetime
   |
   = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider making the type lifetime-generic with a new `'a` lifetime
   |
LL |     pub fn life4<'b>(x: for<'a, 'c> fn(&'a i32));
   |                             +++
help: consider introducing lifetime `'a` here
   |
LL |     pub fn life4<'a, 'b>(x: for<'c> fn(&'a i32));
   |                  +++

error[E0261]: use of undeclared lifetime name `'a`
  --> $DIR/generic-extern-lifetime.rs:11:39
   |
LL |     pub fn life7<'b>() -> for<'c> fn(&'a i32);
   |                                       ^^ undeclared lifetime
   |
help: consider making the type lifetime-generic with a new `'a` lifetime
   |
LL |     pub fn life7<'b>() -> for<'a, 'c> fn(&'a i32);
   |                               +++
help: consider introducing lifetime `'a` here
   |
LL |     pub fn life7<'a, 'b>() -> for<'c> fn(&'a i32);
   |                  +++

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0261`.