Add NotNullWhen for TryOpen

dotnet · Sep 18, 2019 · 6bb636e · 6bb636e
1 parent 3bb97b1
commit 6bb636e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/System.Console/src/System/TermInfo.cs b/src/System.Console/src/System/TermInfo.cs
@@ -4,6 +4,7 @@
 
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Text;
 using Microsoft.Win32.SafeHandles;
@@ -219,7 +220,7 @@ private Database(string term, byte[] data)
             /// <param name="filePath">The path to the file to open.</param>
             /// <param name="fd">If successful, the opened file descriptor; otherwise, -1.</param>
             /// <returns>true if the file was successfully opened; otherwise, false.</returns>
-            private static bool TryOpen(string filePath, out SafeFileHandle? fd)
+            private static bool TryOpen(string filePath, [NotNullWhen(true)] out SafeFileHandle? fd)
             {
                 fd = Interop.Sys.Open(filePath, Interop.Sys.OpenFlags.O_RDONLY | Interop.Sys.OpenFlags.O_CLOEXEC, 0);
                 if (fd.IsInvalid)