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error[E0308]: `if` and `else` have incompatible types
--> $DIR/fn-pointer-mismatch.rs:11:43
|
LL | let g = if n % 2 == 0 { &foo } else { &bar };
| ---- ^^^^ expected `&fn(u32) -> u32 {foo}`, found `&fn(u32) -> u32 {bar}`
| |
| expected because of this
|
= note: expected reference `&fn(u32) -> u32 {foo}`
found reference `&fn(u32) -> u32 {bar}`
= note: different fn items have unique types, even if their signatures are the same
= help: consider casting both fn items to fn pointers using `as fn(u32) -> u32`
error[E0308]: mismatched types
--> $DIR/fn-pointer-mismatch.rs:23:9
|
LL | let mut a = foo;
| --- expected due to this value
LL | a = bar;
| ^^^ expected fn item, found a different fn item
|
= note: expected fn item `fn(_) -> _ {foo}`
found fn item `fn(_) -> _ {bar}`
= note: different fn items have unique types, even if their signatures are the same
= help: consider casting both fn items to fn pointers using `as fn(u32) -> u32`
error[E0308]: mismatched types
--> $DIR/fn-pointer-mismatch.rs:31:18
|
LL | b = Box::new(bar);
| -------- ^^^ expected fn item, found a different fn item
| |
| arguments to this function are incorrect
|
= note: expected fn item `fn(_) -> _ {foo}`
found fn item `fn(_) -> _ {bar}`
= note: different fn items have unique types, even if their signatures are the same
note: associated function defined here
--> $SRC_DIR/alloc/src/boxed.rs:LL:COL
= help: consider casting both fn items to fn pointers using `as fn(u32) -> u32`
error[E0308]: mismatched types
--> $DIR/fn-pointer-mismatch.rs:36:29
|
LL | let c: fn(u32) -> u32 = &foo;
| -------------- ^^^^ expected fn pointer, found `&fn(u32) -> u32 {foo}`
| |
| expected due to this
|
= note: expected fn pointer `fn(u32) -> u32`
found reference `&fn(u32) -> u32 {foo}`
help: consider removing the reference
|
LL | let c: fn(u32) -> u32 = foo;
| ~~~
error[E0308]: mismatched types
--> $DIR/fn-pointer-mismatch.rs:42:30
|
LL | let d: &fn(u32) -> u32 = foo;
| --------------- ^^^ expected `&fn(u32) -> u32`, found fn item
| |
| expected due to this
|
= note: expected reference `&fn(u32) -> u32`
found fn item `fn(u32) -> u32 {foo}`
help: consider using a reference
|
LL | let d: &fn(u32) -> u32 = &foo;
| ~~~~
error[E0308]: mismatched types
--> $DIR/fn-pointer-mismatch.rs:48:30
|
LL | let e: &fn(u32) -> u32 = &foo;
| --------------- ^^^^ expected `&fn(u32) -> u32`, found `&fn(u32) -> u32 {foo}`
| |
| expected due to this
|
= note: expected reference `&fn(u32) -> u32`
found reference `&fn(u32) -> u32 {foo}`
= note: fn items are distinct from fn pointers
= note: when the arguments and return types match, functions can be coerced to function pointers
help: consider casting to a fn pointer
|
LL | let e: &fn(u32) -> u32 = &(foo as fn(u32) -> u32);
| ~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to 6 previous errors
For more information about this error, try `rustc --explain E0308`.
|
