using C calling convention for general handlers

Author: Freax13

src/structures/idt.rs

@@ -898,7 +898,7 @@ bitflags! {
 /// use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
 ///
 /// let mut idt = InterruptDescriptorTable::new();
-/// fn my_general_handler(
+/// extern "C" fn my_general_handler(
 ///    stack_frame: InterruptStackFrame,
 ///    index: u8,
 ///    error_code: Option<u64>,
@@ -1099,7 +1099,7 @@ mod test {
 
     #[test]
     fn default_handlers() {
-        fn general_handler(
+        extern "C" fn general_handler(
             _stack_frame: InterruptStackFrame,
             _index: u8,
             _error_code: Option<u64>,