Imported Upstream version 2.0.0.11992upstream/2.0.0.11992

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/src/JIT/Regression/JitBlue/GitHub_11689/GitHub_11689.cs b/tests/src/JIT/Regression/JitBlue/GitHub_11689/GitHub_11689.cs
new file mode 100644
index 0000000000..3d8428c928
--- /dev/null
+++ b/tests/src/JIT/Regression/JitBlue/GitHub_11689/GitHub_11689.cs
@@ -0,0 +1,39 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+// Repro case for a bug involving hoisting of static field loads out of
+// loops and (illegally) above the corresponding type initializer calls.
+
+using System.Runtime.CompilerServices;
+
+namespace N
+{
+    struct WrappedInt
+    {
+        public int Value;
+
+        public static WrappedInt Twenty = new WrappedInt() { Value = 20 };
+    }
+    public static class C
+    {
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        static int unwrap(WrappedInt wi) => wi.Value;
+
+        [MethodImpl(MethodImplOptions.NoInlining)]
+        static int foo(int s, int n)
+        {
+            for (int i = 0; i < n; ++i)
+            {
+                s += unwrap(WrappedInt.Twenty);  // Loading WrappedInt.Twenty must happen after calling the cctor
+            }
+
+            return s;
+        }
+
+        public static int Main(string[] args)
+        {
+            return foo(20, 4);
+        }
+    }
+}