bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/test-utils/src/minicore.rs')
-rw-r--r--crates/test-utils/src/minicore.rs17
1 files changed, 15 insertions, 2 deletions
diff --git a/crates/test-utils/src/minicore.rs b/crates/test-utils/src/minicore.rs
index 22cef04983..6d6c9af7f0 100644
--- a/crates/test-utils/src/minicore.rs
+++ b/crates/test-utils/src/minicore.rs
@@ -111,6 +111,7 @@ pub mod marker {
impl<T: ?Sized> Copy for *const T {}
impl<T: ?Sized> Copy for *mut T {}
impl<T: ?Sized> Copy for &T {}
+ impl Copy for ! {}
}
// endregion:copy
@@ -246,6 +247,12 @@ pub mod clone {
f32 f64
bool char
}
+
+ impl Clone for ! {
+ fn clone(&self) {
+ *self
+ }
+ }
// endregion:builtin_impls
// region:derive
@@ -319,8 +326,8 @@ pub mod mem {
pub fn drop<T>(_x: T) {}
pub const fn replace<T>(dest: &mut T, src: T) -> T {
unsafe {
- let result = *dest;
- *dest = src;
+ let result = crate::ptr::read(dest);
+ crate::ptr::write(dest, src);
result
}
}
@@ -339,6 +346,12 @@ pub mod ptr {
pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
unsafe { drop_in_place(to_drop) }
}
+ pub const unsafe fn read<T>(src: *const T) -> T {
+ *src
+ }
+ pub const unsafe fn write<T>(dst: *mut T, src: T) {
+ *dst = src;
+ }
// endregion:drop
}