1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/error-codes/E0637.rs b/tests/ui/error-codes/E0637.rs
new file mode 100644
index 00000000000..382ce3ed01f
--- /dev/null
+++ b/tests/ui/error-codes/E0637.rs
@@ -0,0 +1,17 @@
+fn underscore_lifetime<'_>(str1: &'_ str, str2: &'_ str) -> &'_ str {
+    //~^ ERROR: `'_` cannot be used here [E0637]
+    //~| ERROR: missing lifetime specifier
+    if str1.len() > str2.len() {
+        str1
+    } else {
+        str2
+    }
+}
+
+fn and_without_explicit_lifetime<T>()
+where
+    T: Into<&u32>, //~ ERROR: `&` without an explicit lifetime name cannot be used here [E0637]
+{
+}
+
+fn main() {}