1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/higher-rank-trait-bounds/hrtb-malformed-lifetime-generics.rs b/tests/ui/higher-rank-trait-bounds/hrtb-malformed-lifetime-generics.rs
new file mode 100644
index 000000000..4b096be59
--- /dev/null
+++ b/tests/ui/higher-rank-trait-bounds/hrtb-malformed-lifetime-generics.rs
@@ -0,0 +1,20 @@
+// Test that Fn-family traits with lifetime parameters shouldn't compile and
+// we suggest the usage of higher-rank trait bounds instead.
+
+fn fa(_: impl Fn<'a>(&'a str) -> bool) {}
+//~^ ERROR `Fn` traits cannot take lifetime parameters
+
+fn fb(_: impl FnMut<'a, 'b>(&'a str, &'b str) -> bool) {}
+//~^ ERROR `Fn` traits cannot take lifetime parameters
+
+fn fc(_: impl std::fmt::Display + FnOnce<'a>(&'a str) -> bool + std::fmt::Debug) {}
+//~^ ERROR `Fn` traits cannot take lifetime parameters
+
+use std::ops::Fn as AliasedFn;
+fn fd(_: impl AliasedFn<'a>(&'a str) -> bool) {}
+//~^ ERROR `Fn` traits cannot take lifetime parameters
+
+fn fe<F>(_: F) where F: Fn<'a>(&'a str) -> bool {}
+//~^ ERROR `Fn` traits cannot take lifetime parameters
+
+fn main() {}