Trait UnsafeFnPtr 

pub trait UnsafeFnPtr: FnPtr {
    // Required method
    unsafe fn invoke(&self, args: Self::Args) -> Self::Output;
}

Marker trait for all unsafe function pointer types (unsafe fn / unsafe extern fn).

Required Methods

unsafe fn invoke(&self, args: Self::Args) -> Self::Output

Invokes the function pointed to with the given args.

Safety

Calling this function pointer is unsafe because the function may have invariants that must be manually upheld by the caller.

Examples

unsafe fn add(a: *const i32, b: *const i32) -> i32 { *a + *b }

let f: unsafe fn(*const i32, *const i32) -> i32 = add;
let result = unsafe { f.invoke((&2, &3)) };
assert_eq!(result, 5);

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<Ret: 'static> UnsafeFnPtr for unsafe fn() -> Ret

unsafe fn invoke(&self, (): Self::Args) -> Self::Output

impl<Ret: 'static> UnsafeFnPtr for unsafe extern "C" fn() -> Ret

unsafe fn invoke(&self, (): Self::Args) -> Self::Output

impl<Ret: 'static> UnsafeFnPtr for unsafe extern "system" fn() -> Ret

unsafe fn invoke(&self, (): Self::Args) -> Self::Output

impl<Ret: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn() -> Ret

unsafe fn invoke(&self, (): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static> UnsafeFnPtr for unsafe fn(A) -> Ret

unsafe fn invoke(&self, (__arg_0): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static> UnsafeFnPtr for unsafe extern "C" fn(A) -> Ret

unsafe fn invoke(&self, (__arg_0): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static> UnsafeFnPtr for unsafe extern "system" fn(A) -> Ret

unsafe fn invoke(&self, (__arg_0): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn(A) -> Ret

unsafe fn invoke(&self, (__arg_0): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static> UnsafeFnPtr for unsafe fn(A, B) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static> UnsafeFnPtr for unsafe extern "C" fn(A, B) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static> UnsafeFnPtr for unsafe extern "system" fn(A, B) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn(A, B) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static> UnsafeFnPtr for unsafe fn(A, B, C) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1, __arg_2): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static> UnsafeFnPtr for unsafe extern "C" fn(A, B, C) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1, __arg_2): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static> UnsafeFnPtr for unsafe extern "system" fn(A, B, C) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1, __arg_2): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn(A, B, C) -> Ret

unsafe fn invoke(&self, (__arg_0, __arg_1, __arg_2): Self::Args) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static> UnsafeFnPtr for unsafe fn(A, B, C, D) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static> UnsafeFnPtr for unsafe extern "C" fn(A, B, C, D) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static> UnsafeFnPtr for unsafe extern "system" fn(A, B, C, D) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn(A, B, C, D) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static> UnsafeFnPtr for unsafe fn(A, B, C, D, E) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static> UnsafeFnPtr for unsafe extern "C" fn(A, B, C, D, E) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static> UnsafeFnPtr for unsafe extern "system" fn(A, B, C, D, E) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn(A, B, C, D, E) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static, F: 'static> UnsafeFnPtr for unsafe fn(A, B, C, D, E, F) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4, __arg_5): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static, F: 'static> UnsafeFnPtr for unsafe extern "C" fn(A, B, C, D, E, F) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4, __arg_5): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static, F: 'static> UnsafeFnPtr for unsafe extern "system" fn(A, B, C, D, E, F) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4, __arg_5): Self::Args, ) -> Self::Output

impl<Ret: 'static, A: 'static, B: 'static, C: 'static, D: 'static, E: 'static, F: 'static> UnsafeFnPtr for unsafe extern "sysv64" fn(A, B, C, D, E, F) -> Ret

unsafe fn invoke( &self, (__arg_0, __arg_1, __arg_2, __arg_3, __arg_4, __arg_5): Self::Args, ) -> Self::Output

Implementors