1 error[E0308]: mismatched types
2 --> $DIR/signature.rs:10:1
4 LL | / pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
8 | |_^ expected normal fn, found unsafe fn
10 = note: expected fn pointer `fn(proc_macro::TokenStream) -> proc_macro::TokenStream`
11 found fn item `unsafe extern "C" fn(i32, u32) -> u32 {foo}`
12 note: associated function defined here
13 --> $SRC_DIR/proc_macro/src/bridge/client.rs:LL:COL
15 LL | pub const fn custom_derive(
18 error: aborting due to previous error
20 For more information about this error, try `rustc --explain E0308`.