1 files changed, 37 insertions, 0 deletions
diff --git a/tests/mir-opt/sroa/lifetimes.rs b/tests/mir-opt/sroa/lifetimes.rs
new file mode 100644
index 000000000..2356d212f
--- /dev/null
+++ b/tests/mir-opt/sroa/lifetimes.rs
@@ -0,0 +1,37 @@
+// unit-test: ScalarReplacementOfAggregates
+// compile-flags: -Cpanic=abort
+// no-prefer-dynamic
+
+trait Err {
+    type Err;
+}
+
+struct Foo<T: Err> {
+    // Check that the `'static` lifetime is erased when creating the local for `x`,
+    // even if we fail to normalize the type.
+    x: Result<Box<dyn std::fmt::Display + 'static>, <T as Err>::Err>,
+    y: u32,
+}
+
+// EMIT_MIR lifetimes.foo.ScalarReplacementOfAggregates.diff
+fn foo<T: Err>() {
+    let foo: Foo<T> = Foo {
+        x: Ok(Box::new(5_u32)),
+        y: 7_u32,
+    };
+
+    let x = foo.x;
+    let y = foo.y;
+
+    if let Ok(x) = x {
+        eprintln!("{x} {y}");
+    }
+}
+
+impl Err for () {
+    type Err = ();
+}
+
+fn main() {
+    foo::<()>()
+}