From 4e8199b572f2035b7749cba276ece3a26630d23e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:18:21 +0200
Subject: Adding upstream version 1.67.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/mir-opt/inline/inline_cycle.rs | 60 +++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 src/test/mir-opt/inline/inline_cycle.rs

(limited to 'src/test/mir-opt/inline/inline_cycle.rs')

diff --git a/src/test/mir-opt/inline/inline_cycle.rs b/src/test/mir-opt/inline/inline_cycle.rs
new file mode 100644
index 000000000..63ad57de1
--- /dev/null
+++ b/src/test/mir-opt/inline/inline_cycle.rs
@@ -0,0 +1,60 @@
+// Check that inliner handles various forms of recursion and doesn't fall into
+// an infinite inlining cycle. The particular outcome of inlining is not
+// crucial otherwise.
+//
+// Regression test for issue #78573.
+
+fn main() {
+    one();
+    two();
+}
+
+// EMIT_MIR inline_cycle.one.Inline.diff
+fn one() {
+    <C as Call>::call();
+}
+
+pub trait Call {
+    fn call();
+}
+
+pub struct A<T>(T);
+pub struct B<T>(T);
+pub struct C;
+
+impl<T: Call> Call for A<T> {
+    #[inline]
+    fn call() {
+        <B<T> as Call>::call()
+    }
+}
+
+
+impl<T: Call> Call for B<T> {
+    #[inline]
+    fn call() {
+        <T as Call>::call()
+    }
+}
+
+impl Call for C {
+    #[inline]
+    fn call() {
+        A::<C>::call()
+    }
+}
+
+// EMIT_MIR inline_cycle.two.Inline.diff
+fn two() {
+    call(f);
+}
+
+#[inline]
+fn call<F: FnOnce()>(f: F) {
+    f();
+}
+
+#[inline]
+fn f() {
+    call(f);
+}
-- 
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