mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 07:14:28 +00:00
21 lines
818 B
Plaintext
21 lines
818 B
Plaintext
error[E0277]: expected a `Fn<(proc_macro::TokenStream,)>` closure, found `unsafe extern "C" fn(i32, u32) -> u32 {foo}`
|
|
--> $DIR/signature.rs:10:1
|
|
|
|
|
LL | / pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
|
|
LL | |
|
|
LL | | loop {}
|
|
LL | | }
|
|
| | ^
|
|
| | |
|
|
| |_call the function in a closure: `|| unsafe { /* code */ }`
|
|
| required by a bound introduced by this call
|
|
|
|
|
= help: the trait `Fn<(proc_macro::TokenStream,)>` is not implemented for fn item `unsafe extern "C" fn(i32, u32) -> u32 {foo}`
|
|
= note: unsafe function cannot be called generically without an unsafe block
|
|
note: required by a bound in `ProcMacro::custom_derive`
|
|
--> $SRC_DIR/proc_macro/src/bridge/client.rs:LL:COL
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|