diff options
Diffstat (limited to 'src/test/ui/nll/issue-57280-1-flipped.rs')
-rw-r--r-- | src/test/ui/nll/issue-57280-1-flipped.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/nll/issue-57280-1-flipped.rs b/src/test/ui/nll/issue-57280-1-flipped.rs new file mode 100644 index 000000000..ad4b8dcfd --- /dev/null +++ b/src/test/ui/nll/issue-57280-1-flipped.rs @@ -0,0 +1,23 @@ +// This test should compile, as the lifetimes +// in matches don't really matter. +// +// We currently use contravariance when checking the +// type of match arms. + +trait Foo<'a> { + const C: &'a u32; +} + +impl<'a, T> Foo<'a> for T { + const C: &'a u32 = &22; +} + +fn foo<'a>(x: &'static u32) { + match x { + <() as Foo<'a>>::C => { } + //~^ ERROR lifetime may not live long enough + &_ => { } + } +} + +fn main() {} |