error: functions cannot be both `const` and `async`
  --> $DIR/fn-header-semantic-fail.rs:12:5
   |
LL |     const async unsafe extern "C" fn ff5() {}
   |     ^^^^^-^^^^^------------------------------
   |     |     |
   |     |     `async` because of this
   |     `const` because of this

error[E0379]: functions in traits cannot be declared const
  --> $DIR/fn-header-semantic-fail.rs:18:9
   |
LL |         const fn ft3();
   |         ^^^^^ functions in traits cannot be const

error[E0379]: functions in traits cannot be declared const
  --> $DIR/fn-header-semantic-fail.rs:20:9
   |
LL |         const async unsafe extern "C" fn ft5();
   |         ^^^^^ functions in traits cannot be const

error: functions cannot be both `const` and `async`
  --> $DIR/fn-header-semantic-fail.rs:20:9
   |
LL |         const async unsafe extern "C" fn ft5();
   |         ^^^^^-^^^^^----------------------------
   |         |     |
   |         |     `async` because of this
   |         `const` because of this

error[E0379]: functions in traits cannot be declared const
  --> $DIR/fn-header-semantic-fail.rs:29:9
   |
LL |         const fn ft3() {}
   |         ^^^^^ functions in traits cannot be const

error[E0379]: functions in traits cannot be declared const
  --> $DIR/fn-header-semantic-fail.rs:31:9
   |
LL |         const async unsafe extern "C" fn ft5() {}
   |         ^^^^^ functions in traits cannot be const

error: functions cannot be both `const` and `async`
  --> $DIR/fn-header-semantic-fail.rs:31:9
   |
LL |         const async unsafe extern "C" fn ft5() {}
   |         ^^^^^-^^^^^------------------------------
   |         |     |
   |         |     `async` because of this
   |         `const` because of this

error: functions cannot be both `const` and `async`
  --> $DIR/fn-header-semantic-fail.rs:41:9
   |
LL |         const async unsafe extern "C" fn fi5() {}
   |         ^^^^^-^^^^^------------------------------
   |         |     |
   |         |     `async` because of this
   |         `const` because of this

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:46:18
   |
LL |     extern "C" {
   |     ---------- in this `extern` block
LL |         async fn fe1();
   |                  ^^^
   |
help: remove the qualifiers
   |
LL |         fn fe1();
   |         ~~

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:47:19
   |
LL |     extern "C" {
   |     ---------- in this `extern` block
LL |         async fn fe1();
LL |         unsafe fn fe2();
   |                   ^^^
   |
help: remove the qualifiers
   |
LL |         fn fe2();
   |         ~~

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:48:18
   |
LL |     extern "C" {
   |     ---------- in this `extern` block
...
LL |         const fn fe3();
   |                  ^^^
   |
help: remove the qualifiers
   |
LL |         fn fe3();
   |         ~~

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:49:23
   |
LL |     extern "C" {
   |     ---------- in this `extern` block
...
LL |         extern "C" fn fe4();
   |                       ^^^
   |
help: remove the qualifiers
   |
LL |         fn fe4();
   |         ~~

error: functions in `extern` blocks cannot have qualifiers
  --> $DIR/fn-header-semantic-fail.rs:50:42
   |
LL |     extern "C" {
   |     ---------- in this `extern` block
...
LL |         const async unsafe extern "C" fn fe5();
   |                                          ^^^
   |
help: remove the qualifiers
   |
LL |         fn fe5();
   |         ~~

error: functions cannot be both `const` and `async`
  --> $DIR/fn-header-semantic-fail.rs:50:9
   |
LL |         const async unsafe extern "C" fn fe5();
   |         ^^^^^-^^^^^----------------------------
   |         |     |
   |         |     `async` because of this
   |         `const` because of this

error: aborting due to 14 previous errors

For more information about this error, try `rustc --explain E0379`.