Mark JitFn fns as unsafe

src/execution_engine.rs

@@ -492,15 +492,15 @@ impl<'ctx, F: Copy> JitFunction<'ctx, F> {
     /// This function is unsafe because the function pointer may dangle
     /// if the ExecutionEngine it came from is dropped. The caller is
     /// thus responsible for ensuring the ExecutionEngine remains valid.
-    pub fn into_raw(self) -> F {
+    pub unsafe fn into_raw(self) -> F {
         self.inner
     }
 
     /// Returns the raw function pointer.
     /// This function is unsafe because the function pointer may dangle
     /// if the ExecutionEngine it came from is dropped. The caller is
     /// thus responsible for ensuring the ExecutionEngine remains valid.
-    pub fn as_raw(&self) -> F {
+    pub unsafe fn as_raw(&self) -> F {
         self.inner
     }
 }