[mcs] coalescing operator if the lhs of a null is a integer type that is larger than the integer type on the rhs. Fixes #22054

1 files changed, 29 insertions, 0 deletions

diff --git a/mcs/tests/gtest-621.cs b/mcs/tests/gtest-621.cs
new file mode 100644
index 00000000000..cfff301328e
--- /dev/null
+++ b/mcs/tests/gtest-621.cs
@@ -0,0 +1,29 @@
+using System;
+
+class X
+{
+	static int Main ()
+	{
+		int? intArg = 1;
+		long? longArg = 2;
+
+		var g = intArg ?? longArg;
+		Console.WriteLine (g);
+		if (g != 1)
+			return 1;
+
+		intArg = null;
+		g = intArg ?? longArg;
+		Console.WriteLine (g);
+		if (g != 2)
+			return 2;
+
+		longArg = null;
+		g = intArg ?? longArg;
+		Console.WriteLine (g);
+		if (g != null)
+			return 3;
+			
+		return 0;
+	}
+}
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