Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 71 insertions, 0 deletions

diff --git a/tests/ui/higher-rank-trait-bounds/hrtb-perfect-forwarding.polonius.stderr b/tests/ui/higher-rank-trait-bounds/hrtb-perfect-forwarding.polonius.stderr
new file mode 100644
index 000000000..a94c80eb3
--- /dev/null
+++ b/tests/ui/higher-rank-trait-bounds/hrtb-perfect-forwarding.polonius.stderr
@@ -0,0 +1,71 @@
+warning: function cannot return without recursing
+  --> $DIR/hrtb-perfect-forwarding.rs:16:1
+   |
+LL | / fn no_hrtb<'b, T>(mut t: T)
+LL | | where
+LL | |     T: Bar<&'b isize>,
+LL | | {
+...  |
+LL | |     no_hrtb(&mut t);
+   | |     --------------- recursive call site
+LL | | }
+   | |_^ cannot return without recursing
+   |
+   = note: `#[warn(unconditional_recursion)]` on by default
+   = help: a `loop` may express intention better if this is on purpose
+
+warning: function cannot return without recursing
+  --> $DIR/hrtb-perfect-forwarding.rs:25:1
+   |
+LL | / fn bar_hrtb<T>(mut t: T)
+LL | | where
+LL | |     T: for<'b> Bar<&'b isize>,
+LL | | {
+...  |
+LL | |     bar_hrtb(&mut t);
+   | |     ---------------- recursive call site
+LL | | }
+   | |_^ cannot return without recursing
+   |
+   = help: a `loop` may express intention better if this is on purpose
+
+warning: function cannot return without recursing
+  --> $DIR/hrtb-perfect-forwarding.rs:35:1
+   |
+LL | / fn foo_hrtb_bar_not<'b, T>(mut t: T)
+LL | | where
+LL | |     T: for<'a> Foo<&'a isize> + Bar<&'b isize>,
+LL | | {
+...  |
+LL | |     foo_hrtb_bar_not(&mut t);
+   | |     ------------------------ recursive call site
+LL | |
+LL | |
+LL | | }
+   | |_^ cannot return without recursing
+   |
+   = help: a `loop` may express intention better if this is on purpose
+
+error: higher-ranked subtype error
+  --> $DIR/hrtb-perfect-forwarding.rs:43:5
+   |
+LL |     foo_hrtb_bar_not(&mut t);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+
+warning: function cannot return without recursing
+  --> $DIR/hrtb-perfect-forwarding.rs:48:1
+   |
+LL | / fn foo_hrtb_bar_hrtb<T>(mut t: T)
+LL | | where
+LL | |     T: for<'a> Foo<&'a isize> + for<'b> Bar<&'b isize>,
+LL | | {
+LL | |     // OK -- now we have `T : for<'b> Bar<&'b isize>`.
+LL | |     foo_hrtb_bar_hrtb(&mut t);
+   | |     ------------------------- recursive call site
+LL | | }
+   | |_^ cannot return without recursing
+   |
+   = help: a `loop` may express intention better if this is on purpose
+
+error: aborting due to previous error; 4 warnings emitted
+