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, 18 insertions, 0 deletions

diff --git a/src/test/ui/derived-errors/issue-31997.rs b/src/test/ui/derived-errors/issue-31997.rs
new file mode 100644
index 000000000..ff619313a
--- /dev/null
+++ b/src/test/ui/derived-errors/issue-31997.rs
@@ -0,0 +1,18 @@
+// Test that the resolve failure does not lead to downstream type errors.
+// See issue #31997.
+#![allow(deprecated)]
+
+trait TheTrait { }
+
+fn closure<F, T>(x: F) -> Result<T, ()>
+    where F: FnMut() -> T, T: TheTrait,
+{
+    unimplemented!()
+}
+
+fn foo() -> Result<(), ()> {
+    try!(closure(|| bar(core::ptr::null_mut()))); //~ ERROR cannot find function `bar` in this scope
+    Ok(())
+}
+
+fn main() { }