diff options
Diffstat (limited to 'src/test/ui/regions/regions-variance-covariant-use-contravariant.rs')
-rw-r--r-- | src/test/ui/regions/regions-variance-covariant-use-contravariant.rs | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/src/test/ui/regions/regions-variance-covariant-use-contravariant.rs b/src/test/ui/regions/regions-variance-covariant-use-contravariant.rs deleted file mode 100644 index a2183b491..000000000 --- a/src/test/ui/regions/regions-variance-covariant-use-contravariant.rs +++ /dev/null @@ -1,27 +0,0 @@ -// Test that a type which is covariant with respect to its region -// parameter yields an error when used in a contravariant way. -// -// Note: see variance-regions-*.rs for the tests that check that the -// variance inference works in the first place. - -// This is covariant with respect to 'a, meaning that -// Covariant<'foo> <: Covariant<'static> because -// 'foo <= 'static -struct Covariant<'a> { - f: extern "Rust" fn(&'a isize) -} - -fn use_<'short,'long>(c: Covariant<'long>, - s: &'short isize, - l: &'long isize, - _where:Option<&'short &'long ()>) { - - // Test whether Covariant<'long> <: Covariant<'short>. Since - // 'short <= 'long, this would be true if the Covariant type were - // contravariant with respect to its parameter 'a. - - let _: Covariant<'short> = c; - //~^ ERROR lifetime may not live long enough -} - -fn main() {} |