1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/error-codes/E0637.stderr b/src/test/ui/error-codes/E0637.stderr
new file mode 100644
index 000000000..35a4b34fb
--- /dev/null
+++ b/src/test/ui/error-codes/E0637.stderr
@@ -0,0 +1,28 @@
+error[E0637]: `'_` cannot be used here
+  --> $DIR/E0637.rs:1:24
+   |
+LL | fn underscore_lifetime<'_>(str1: &'_ str, str2: &'_ str) -> &'_ str {
+   |                        ^^ `'_` is a reserved lifetime name
+
+error[E0106]: missing lifetime specifier
+  --> $DIR/E0637.rs:1:62
+   |
+LL | fn underscore_lifetime<'_>(str1: &'_ str, str2: &'_ str) -> &'_ str {
+   |                                  -------        -------      ^^ expected named lifetime parameter
+   |
+   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `str1` or `str2`
+help: consider introducing a named lifetime parameter
+   |
+LL | fn underscore_lifetime<'a, '_>(str1: &'a str, str2: &'a str) -> &'a str {
+   |                        +++            ~~             ~~          ~~
+
+error[E0637]: `&` without an explicit lifetime name cannot be used here
+  --> $DIR/E0637.rs:13:13
+   |
+LL |     T: Into<&u32>,
+   |             ^ explicit lifetime name needed here
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0106, E0637.
+For more information about an error, try `rustc --explain E0106`.