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Diffstat (limited to 'src/test/ui/array-slice-vec/variance-vec-covariant.rs')
-rw-r--r-- | src/test/ui/array-slice-vec/variance-vec-covariant.rs | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/src/test/ui/array-slice-vec/variance-vec-covariant.rs b/src/test/ui/array-slice-vec/variance-vec-covariant.rs deleted file mode 100644 index d7e64132f..000000000 --- a/src/test/ui/array-slice-vec/variance-vec-covariant.rs +++ /dev/null @@ -1,20 +0,0 @@ -// run-pass - -// Test that vec is now covariant in its argument type. - -#![allow(dead_code)] - -fn foo<'a,'b>(v1: Vec<&'a i32>, v2: Vec<&'b i32>) -> i32 { - bar(v1, v2).cloned().unwrap_or(0) // only type checks if we can intersect 'a and 'b -} - -fn bar<'c>(v1: Vec<&'c i32>, v2: Vec<&'c i32>) -> Option<&'c i32> { - v1.get(0).cloned().or_else(|| v2.get(0).cloned()) -} - -fn main() { - let x = 22; - let y = 44; - assert_eq!(foo(vec![&x], vec![&y]), 22); - assert_eq!(foo(vec![&y], vec![&x]), 44); -} |