1 files changed, 4 insertions, 4 deletions
diff --git a/src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/MemoryMarshal.cs b/src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/MemoryMarshal.cs
index c0c2bf3e0c0..f089434fa33 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/MemoryMarshal.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/MemoryMarshal.cs
@@ -77,13 +77,13 @@ namespace System.Runtime.InteropServices
         /// Returns a reference to the 0th element of the Span. If the Span is empty, returns a reference to the location where the 0th element
         /// would have been stored. Such a reference may or may not be null. It can be used for pinning but must never be dereferenced.
         /// </summary>
-        public static ref T GetReference<T>(Span<T> span) => ref span._reference.Value;
+        public static ref T GetReference<T>([LifetimeAnnotation(false, true)] Span<T> span) => ref span._reference.Value;
 
         /// <summary>
         /// Returns a reference to the 0th element of the ReadOnlySpan. If the ReadOnlySpan is empty, returns a reference to the location where the 0th element
         /// would have been stored. Such a reference may or may not be null. It can be used for pinning but must never be dereferenced.
         /// </summary>
-        public static ref T GetReference<T>(ReadOnlySpan<T> span) => ref span._reference.Value;
+        public static ref T GetReference<T>([LifetimeAnnotation(false, true)] ReadOnlySpan<T> span) => ref span._reference.Value;
 
         /// <summary>
         /// Returns a reference to the 0th element of the Span. If the Span is empty, returns a reference to fake non-null pointer. Such a reference can be used
@@ -219,7 +219,7 @@ namespace System.Runtime.InteropServices
         /// <returns>A span representing the specified reference and length.</returns>
         /// <remarks>The lifetime of the returned span will not be validated for safety by span-aware languages.</remarks>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Span<T> CreateSpan<T>(ref T reference, int length) => new Span<T>(ref reference, length);
+        public static Span<T> CreateSpan<T>([LifetimeAnnotation(true, false)] ref T reference, int length) => new Span<T>(ref reference, length);
 
         /// <summary>
         /// Creates a new read-only span over a portion of a regular managed object. This can be useful
@@ -231,7 +231,7 @@ namespace System.Runtime.InteropServices
         /// <returns>A read-only span representing the specified reference and length.</returns>
         /// <remarks>The lifetime of the returned span will not be validated for safety by span-aware languages.</remarks>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static ReadOnlySpan<T> CreateReadOnlySpan<T>(ref T reference, int length) => new ReadOnlySpan<T>(ref reference, length);
+        public static ReadOnlySpan<T> CreateReadOnlySpan<T>([LifetimeAnnotation(true, false)] ref T reference, int length) => new ReadOnlySpan<T>(ref reference, length);
 
         /// <summary>Creates a new read-only span for a null-terminated string.</summary>
         /// <param name="value">The pointer to the null-terminated string of characters.</param>