Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 22 insertions, 0 deletions

diff --git a/src/test/ui/infinite/infinite-vec-type-recursion.stderr b/src/test/ui/infinite/infinite-vec-type-recursion.stderr
new file mode 100644
index 000000000..1e487a5b1
--- /dev/null
+++ b/src/test/ui/infinite/infinite-vec-type-recursion.stderr
@@ -0,0 +1,22 @@
+error[E0391]: cycle detected when expanding type alias `X`
+  --> $DIR/infinite-vec-type-recursion.rs:1:14
+   |
+LL | type X = Vec<X>;
+   |              ^
+   |
+   = note: ...which immediately requires expanding type alias `X` again
+   = note: type aliases cannot be recursive
+   = help: consider using a struct, enum, or union instead to break the cycle
+   = help: see <https://doc.rust-lang.org/reference/types.html#recursive-types> for more information
+note: cycle used when collecting item types in top-level module
+  --> $DIR/infinite-vec-type-recursion.rs:1:1
+   |
+LL | / type X = Vec<X>;
+LL | |
+LL | |
+LL | | fn main() { let b: X = Vec::new(); }
+   | |____________________________________^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0391`.