move the va_copy, va_arg and va_end to core::intrinsics

Author: folkertdev

library/core/src/ffi/va_list.rs

@@ -5,6 +5,7 @@
 use crate::ffi::c_void;
 #[allow(unused_imports)]
 use crate::fmt;
+use crate::intrinsics::va_list::{va_arg, va_copy, va_end};
 use crate::marker::{PhantomData, PhantomInvariantLifetime};
 use crate::ops::{Deref, DerefMut};
 
@@ -280,20 +281,3 @@ impl<'f> Drop for VaListImpl<'f> {
         // This works for now, since `va_end` is a no-op on all current LLVM targets.
     }
 }
-
-/// Destroy the arglist `ap` after initialization with `va_start` or
-/// `va_copy`.
-#[rustc_intrinsic]
-#[rustc_nounwind]
-unsafe fn va_end(ap: &mut VaListImpl<'_>);
-
-/// Copies the current location of arglist `src` to the arglist `dst`.
-#[rustc_intrinsic]
-#[rustc_nounwind]
-unsafe fn va_copy<'f>(dest: *mut VaListImpl<'f>, src: &VaListImpl<'f>);
-
-/// Loads an argument of type `T` from the `va_list` `ap` and increment the
-/// argument `ap` points to.
-#[rustc_intrinsic]
-#[rustc_nounwind]
-unsafe fn va_arg<T: VaArgSafe>(ap: &mut VaListImpl<'_>) -> T;

library/core/src/intrinsics/mod.rs

@@ -61,6 +61,7 @@ mod bounds;
 pub mod fallback;
 pub mod mir;
 pub mod simd;
+pub(crate) mod va_list;
 
 // These imports are used for simplifying intra-doc links
 #[allow(unused_imports)]

library/core/src/intrinsics/va_list.rs

@@ -0,0 +1,17 @@
+use crate::ffi::va_list::{VaArgSafe, VaListImpl};
+
+/// Copies the current location of arglist `src` to the arglist `dst`.
+#[rustc_intrinsic]
+#[rustc_nounwind]
+pub(crate) unsafe fn va_copy<'f>(dest: *mut VaListImpl<'f>, src: &VaListImpl<'f>);
+
+/// Loads an argument of type `T` from the `va_list` `ap` and increment the
+/// argument `ap` points to.
+#[rustc_intrinsic]
+#[rustc_nounwind]
+pub(crate) unsafe fn va_arg<T: VaArgSafe>(ap: &mut VaListImpl<'_>) -> T;
+
+/// Destroy the arglist `ap` after initialization with `va_start` or `va_copy`.
+#[rustc_intrinsic]
+#[rustc_nounwind]
+pub(crate) unsafe fn va_end(ap: &mut VaListImpl<'_>);