warning: variable `a` is assigned to, but never used
  --> $DIR/liveness-consts.rs:7:13
   |
LL |     let mut a = 0;
   |             ^
   |
note: the lint level is defined here
  --> $DIR/liveness-consts.rs:2:9
   |
LL | #![warn(unused)]
   |         ^^^^^^
   = note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
   = note: consider using `_a` instead

warning: value assigned to `b` is never read
  --> $DIR/liveness-consts.rs:17:5
   |
LL |     b += 1;
   |     ^
   |
   = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
   = help: maybe it is overwritten before being read?

warning: unused variable: `e`
  --> $DIR/liveness-consts.rs:24:13
   |
LL |         let e = 1;
   |             ^ help: if this is intentional, prefix it with an underscore: `_e`

warning: unused variable: `s`
  --> $DIR/liveness-consts.rs:33:24
   |
LL | pub fn f(x: [u8; { let s = 17; 100 }]) -> [u8;  { let z = 18; 100 }] {
   |                        ^ help: if this is intentional, prefix it with an underscore: `_s`

warning: unused variable: `z`
  --> $DIR/liveness-consts.rs:33:55
   |
LL | pub fn f(x: [u8; { let s = 17; 100 }]) -> [u8;  { let z = 18; 100 }] {
   |                                                       ^ help: if this is intentional, prefix it with an underscore: `_z`

warning: value assigned to `t` is never read
  --> $DIR/liveness-consts.rs:42:9
   |
LL |         t = t + t;
   |         ^
   |
   = help: maybe it is overwritten before being read?

warning: unused variable: `w`
  --> $DIR/liveness-consts.rs:49:13
   |
LL |         let w = 10;
   |             ^ help: if this is intentional, prefix it with an underscore: `_w`

warning: unused variable: `z`
  --> $DIR/liveness-consts.rs:60:13
   |
LL |         let z = 42;
   |             ^ help: if this is intentional, prefix it with an underscore: `_z`

warning: 8 warnings emitted