Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/ui/traits/issue-91949-hangs-on-recursion.stderr b/tests/ui/traits/issue-91949-hangs-on-recursion.stderr
new file mode 100644
index 000000000..1f18c5daf
--- /dev/null
+++ b/tests/ui/traits/issue-91949-hangs-on-recursion.stderr
@@ -0,0 +1,25 @@
+warning: function cannot return without recursing
+  --> $DIR/issue-91949-hangs-on-recursion.rs:23:1
+   |
+LL | / fn recurse<T>(elements: T) -> Vec<char>
+LL | | where
+LL | |     T: Iterator<Item = ()>,
+   | |___________________________^ cannot return without recursing
+LL |   {
+LL |       recurse(IteratorOfWrapped(elements).map(|t| t.0))
+   |       ------------------------------------------------- recursive call site
+   |
+   = help: a `loop` may express intention better if this is on purpose
+   = note: `#[warn(unconditional_recursion)]` on by default
+
+error[E0275]: overflow evaluating the requirement `(): Sized`
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "512"]` attribute to your crate (`issue_91949_hangs_on_recursion`)
+   = note: required for `std::iter::Empty<()>` to implement `Iterator`
+   = note: 171 redundant requirements hidden
+   = note: required for `IteratorOfWrapped<(), Map<IteratorOfWrapped<(), Map<IteratorOfWrapped<(), Map<..., ...>>, ...>>, ...>>` to implement `Iterator`
+   = note: the full type name has been written to '$TEST_BUILD_DIR/traits/issue-91949-hangs-on-recursion/issue-91949-hangs-on-recursion.long-type-hash.txt'
+
+error: aborting due to previous error; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0275`.