1 files changed, 47 insertions, 0 deletions
diff --git a/tests/ui/lifetimes/issue-105227.stderr b/tests/ui/lifetimes/issue-105227.stderr
new file mode 100644
index 000000000..d21145937
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+++ b/tests/ui/lifetimes/issue-105227.stderr
@@ -0,0 +1,47 @@
+error[E0700]: hidden type for `impl Iterator<Item = char>` captures lifetime that does not appear in bounds
+  --> $DIR/issue-105227.rs:7:5
+   |
+LL | fn chars0(v :(& str, &str)) -> impl Iterator<Item = char> {
+   |               ----- hidden type `std::iter::Chain<Chars<'_>, Chars<'_>>` captures the anonymous lifetime defined here
+LL |
+LL |     v.0.chars().chain(v.1.chars())
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: to declare that `impl Iterator<Item = char>` captures `'_`, you can introduce a named lifetime parameter `'a`
+   |
+LL | fn chars0<'a>(v :(&'a  str, &'a str)) -> impl Iterator<Item = char> + 'a  {
+   |          ++++      ++        ++                                     ++++
+
+error[E0700]: hidden type for `impl Iterator<Item = char>` captures lifetime that does not appear in bounds
+  --> $DIR/issue-105227.rs:13:5
+   |
+LL | fn chars1(v0 : & str, v1 : &str) -> impl Iterator<Item = char> {
+   |                ----- hidden type `std::iter::Chain<Chars<'_>, Chars<'_>>` captures the anonymous lifetime defined here
+LL |
+LL |     v0.chars().chain(v1.chars())
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: to declare that `impl Iterator<Item = char>` captures `'_`, you can introduce a named lifetime parameter `'a`
+   |
+LL | fn chars1<'a>(v0 : &'a  str, v1 : &'a str) -> impl Iterator<Item = char> + 'a  {
+   |          ++++       ++             ++                                    ++++
+
+error[E0700]: hidden type for `impl Iterator<Item = char>` captures lifetime that does not appear in bounds
+  --> $DIR/issue-105227.rs:21:5
+   |
+LL | fn chars2<'b>(v0 : &str, v1 : &'_ str, v2 : &'b str) ->
+   |                    ---- hidden type `std::iter::Chain<Chars<'_>, Chars<'_>>` captures the anonymous lifetime defined here
+...
+LL |     (v0.chars().chain(v1.chars()), v2)
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: to declare that `impl Iterator<Item = char>` captures `'_`, you can use the named lifetime parameter `'b`
+   |
+LL ~ fn chars2<'b>(v0 : &'b str, v1 : &'b str, v2 : &'b str) ->
+LL |
+LL ~     (impl Iterator<Item = char> + 'b , &'b str)
+   |
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0700`.