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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:20:39 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:20:39 +0000
commit1376c5a617be5c25655d0d7cb63e3beaa5a6e026 (patch)
tree3bb8d61aee02bc7a15eab3f36e3b921afc2075d0 /tests/ui/variance-intersection-of-ref-and-opt-ref.rs
parentReleasing progress-linux version 1.69.0+dfsg1-1~progress7.99u1. (diff)
downloadrustc-1376c5a617be5c25655d0d7cb63e3beaa5a6e026.tar.xz
rustc-1376c5a617be5c25655d0d7cb63e3beaa5a6e026.zip
Merging upstream version 1.70.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/variance-intersection-of-ref-and-opt-ref.rs')
-rw-r--r--tests/ui/variance-intersection-of-ref-and-opt-ref.rs25
1 files changed, 0 insertions, 25 deletions
diff --git a/tests/ui/variance-intersection-of-ref-and-opt-ref.rs b/tests/ui/variance-intersection-of-ref-and-opt-ref.rs
deleted file mode 100644
index 74707a98d..000000000
--- a/tests/ui/variance-intersection-of-ref-and-opt-ref.rs
+++ /dev/null
@@ -1,25 +0,0 @@
-// run-pass
-// Elaborated version of the opening example from RFC 738. This failed
-// to compile before variance because invariance of `Option` prevented
-// us from approximating the lifetimes of `field1` and `field2` to a
-// common intersection.
-
-#![allow(dead_code)]
-
-struct List<'l> {
- field1: &'l i32,
- field2: Option<&'l i32>,
-}
-
-fn foo(field1: &i32, field2: Option<&i32>) -> i32 {
- let list = List { field1: field1, field2: field2 };
- *list.field1 + list.field2.cloned().unwrap_or(0)
-}
-
-fn main() {
- let x = 22;
- let y = Some(3);
- let z = None;
- assert_eq!(foo(&x, y.as_ref()), 25);
- assert_eq!(foo(&x, z.as_ref()), 22);
-}