Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 36 insertions, 0 deletions

diff --git a/tests/ui/generator/issue-44197.rs b/tests/ui/generator/issue-44197.rs
new file mode 100644
index 000000000..389b9d139
--- /dev/null
+++ b/tests/ui/generator/issue-44197.rs
@@ -0,0 +1,36 @@
+// run-pass
+
+#![feature(generators, generator_trait)]
+
+use std::ops::{Generator, GeneratorState};
+use std::pin::Pin;
+
+fn foo(_: &str) -> String {
+    String::new()
+}
+
+fn bar(baz: String) -> impl Generator<(), Yield = String, Return = ()> {
+    move || {
+        yield foo(&baz);
+    }
+}
+
+fn foo2(_: &str) -> Result<String, ()> {
+    Err(())
+}
+
+fn bar2(baz: String) -> impl Generator<(), Yield = String, Return = ()> {
+    move || {
+        if let Ok(quux) = foo2(&baz) {
+            yield quux;
+        }
+    }
+}
+
+fn main() {
+    assert_eq!(
+        Pin::new(&mut bar(String::new())).resume(()),
+        GeneratorState::Yielded(String::new())
+    );
+    assert_eq!(Pin::new(&mut bar2(String::new())).resume(()), GeneratorState::Complete(()));
+}