From 9d985f0f0a8fad3374262a478a7f86943d94467e Mon Sep 17 00:00:00 2001
From: Nils Andresen <nils@nils-andresen.de>
Date: Wed, 17 Aug 2022 14:24:53 +0200
Subject: [PATCH] (#922) fixed ArgumentNullException on .NET Framework

It seems, when Spectre.Console is compiled for
netstandard2.0, StackTrace.GetFrames() returns null
instead of an empty array.
---
 src/Spectre.Console/Widgets/Exceptions/ExceptionFormatter.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Spectre.Console/Widgets/Exceptions/ExceptionFormatter.cs b/src/Spectre.Console/Widgets/Exceptions/ExceptionFormatter.cs
index 1d749a4..97acddf 100644
--- a/src/Spectre.Console/Widgets/Exceptions/ExceptionFormatter.cs
+++ b/src/Spectre.Console/Widgets/Exceptions/ExceptionFormatter.cs
@@ -221,9 +221,9 @@ internal static class ExceptionFormatter
         return true;
     }
 
-    private static IEnumerable<StackFrame> FilterStackFrames(this IEnumerable<StackFrame?> frames)
+    private static IEnumerable<StackFrame> FilterStackFrames(this IEnumerable<StackFrame?>? frames)
     {
-        var allFrames = frames.ToArray();
+        var allFrames = frames?.ToArray() ?? Array.Empty<StackFrame>();
         var numberOfFrames = allFrames.Length;
 
         for (var i = 0; i < numberOfFrames; i++)