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Diffstat (limited to 'tests/ui/regions/regions-variance-invariant-use-covariant.stderr')
| -rw-r--r-- | tests/ui/regions/regions-variance-invariant-use-covariant.stderr | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/regions/regions-variance-invariant-use-covariant.stderr b/tests/ui/regions/regions-variance-invariant-use-covariant.stderr new file mode 100644 index 000000000..761e78d17 --- /dev/null +++ b/tests/ui/regions/regions-variance-invariant-use-covariant.stderr @@ -0,0 +1,15 @@ +error: lifetime may not live long enough + --> $DIR/regions-variance-invariant-use-covariant.rs:17:12 + | +LL | fn use_<'b>(c: Invariant<'b>) { + | -- lifetime `'b` defined here +... +LL | let _: Invariant<'static> = c; + | ^^^^^^^^^^^^^^^^^^ type annotation requires that `'b` must outlive `'static` + | + = note: requirement occurs because of the type `Invariant<'_>`, which makes the generic argument `'_` invariant + = note: the struct `Invariant<'a>` is invariant over the parameter `'a` + = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance + +error: aborting due to previous error + |