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-rw-r--r--tests/ui/compare-method/region-unrelated.rs15
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/compare-method/region-unrelated.rs b/tests/ui/compare-method/region-unrelated.rs
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+++ b/tests/ui/compare-method/region-unrelated.rs
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+// Test that we elaborate `Type: 'region` constraints and infer various important things.
+
+trait Master<'a, T: ?Sized, U> {
+ fn foo() where T: 'a;
+}
+
+// `U: 'a` does not imply `V: 'a`
+impl<'a, U, V> Master<'a, U, V> for () {
+ fn foo() where V: 'a { }
+ //~^ ERROR impl has stricter requirements than trait
+}
+
+fn main() {
+ println!("Hello, world!");
+}