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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
commit64d98f8ee037282c35007b64c2649055c56af1db (patch)
tree5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /src/test/ui/union/union-unsafe.rs
parentAdding debian version 1.67.1+dfsg1-1. (diff)
downloadrustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz
rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/union/union-unsafe.rs')
-rw-r--r--src/test/ui/union/union-unsafe.rs78
1 files changed, 0 insertions, 78 deletions
diff --git a/src/test/ui/union/union-unsafe.rs b/src/test/ui/union/union-unsafe.rs
deleted file mode 100644
index 5e1837a90..000000000
--- a/src/test/ui/union/union-unsafe.rs
+++ /dev/null
@@ -1,78 +0,0 @@
-// revisions: mir thir
-// [thir]compile-flags: -Z thir-unsafeck
-
-use std::mem::ManuallyDrop;
-use std::cell::RefCell;
-
-union U1 {
- a: u8
-}
-
-union U2 {
- a: ManuallyDrop<String>
-}
-
-union U3<T> {
- a: ManuallyDrop<T>
-}
-
-union U4<T: Copy> {
- a: T
-}
-
-union URef {
- p: &'static mut i32,
-}
-
-union URefCell { // field that does not drop but is not `Copy`, either
- a: (ManuallyDrop<RefCell<i32>>, i32),
-}
-
-fn deref_union_field(mut u: URef) {
- // Not an assignment but an access to the union field!
- *(u.p) = 13; //~ ERROR access to union field is unsafe
-}
-
-fn assign_noncopy_union_field(mut u: URefCell) {
- // FIXME(thir-unsafeck)
- u.a = (ManuallyDrop::new(RefCell::new(0)), 1); // OK (assignment does not drop)
- u.a.0 = ManuallyDrop::new(RefCell::new(0)); // OK (assignment does not drop)
- u.a.1 = 1; // OK
-}
-
-fn generic_noncopy<T: Default>() {
- let mut u3 = U3 { a: ManuallyDrop::new(T::default()) };
- u3.a = ManuallyDrop::new(T::default()); // OK (assignment does not drop)
- *u3.a = T::default(); //~ ERROR access to union field is unsafe
-}
-
-fn generic_copy<T: Copy + Default>() {
- let mut u3 = U3 { a: ManuallyDrop::new(T::default()) };
- u3.a = ManuallyDrop::new(T::default()); // OK
- *u3.a = T::default(); //~ ERROR access to union field is unsafe
-
- let mut u4 = U4 { a: T::default() };
- u4.a = T::default(); // OK
-}
-
-fn main() {
- let mut u1 = U1 { a: 10 }; // OK
- let a = u1.a; //~ ERROR access to union field is unsafe
- u1.a = 11; // OK
-
- let U1 { a } = u1; //~ ERROR access to union field is unsafe
- if let U1 { a: 12 } = u1 {} //~ ERROR access to union field is unsafe
- // let U1 { .. } = u1; // OK
-
- let mut u2 = U2 { a: ManuallyDrop::new(String::from("old")) }; // OK
- u2.a = ManuallyDrop::new(String::from("new")); // OK (assignment does not drop)
- *u2.a = String::from("new"); //~ ERROR access to union field is unsafe
-
- let mut u3 = U3 { a: ManuallyDrop::new(0) }; // OK
- u3.a = ManuallyDrop::new(1); // OK
- *u3.a = 1; //~ ERROR access to union field is unsafe
-
- let mut u3 = U3 { a: ManuallyDrop::new(String::from("old")) }; // OK
- u3.a = ManuallyDrop::new(String::from("new")); // OK (assignment does not drop)
- *u3.a = String::from("new"); //~ ERROR access to union field is unsafe
-}