From a4a81abe3f6b0adf293401a4a6bc623279011071 Mon Sep 17 00:00:00 2001
From: Tarek Mahmoud Sayed <tarekms@microsoft.com>
Date: Wed, 5 Jun 2024 09:31:00 -0700
Subject: [PATCH] Change tags parameter in Activity.AddException to be `in`
 paramater. (#103009)

---
 .../ref/System.Diagnostics.DiagnosticSourceActivity.cs          | 2 +-
 .../src/System/Diagnostics/Activity.cs                          | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libraries/System.Diagnostics.DiagnosticSource/ref/System.Diagnostics.DiagnosticSourceActivity.cs b/src/libraries/System.Diagnostics.DiagnosticSource/ref/System.Diagnostics.DiagnosticSourceActivity.cs
index a55884d21ada74..5fcfa8f27ae443 100644
--- a/src/libraries/System.Diagnostics.DiagnosticSource/ref/System.Diagnostics.DiagnosticSourceActivity.cs
+++ b/src/libraries/System.Diagnostics.DiagnosticSource/ref/System.Diagnostics.DiagnosticSourceActivity.cs
@@ -50,7 +50,7 @@ public string? Id
         public string? TraceStateString { get { throw null; } set { } }
         public System.Diagnostics.Activity AddBaggage(string key, string? value) { throw null; }
         public System.Diagnostics.Activity AddEvent(System.Diagnostics.ActivityEvent e) { throw null; }
-        public System.Diagnostics.Activity AddException(System.Exception exception, System.Diagnostics.TagList tags = default, System.DateTimeOffset timestamp = default) { throw null; }
+        public System.Diagnostics.Activity AddException(System.Exception exception, in System.Diagnostics.TagList tags = default, System.DateTimeOffset timestamp = default) { throw null; }
         public System.Diagnostics.Activity AddLink(System.Diagnostics.ActivityLink link) { throw null; }
         public System.Diagnostics.Activity AddTag(string key, string? value) { throw null; }
         public System.Diagnostics.Activity AddTag(string key, object? value) { throw null; }
diff --git a/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs b/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs
index d581df203bb69c..baae3c2aa0e120 100644
--- a/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs
+++ b/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Activity.cs
@@ -532,7 +532,7 @@ public Activity AddEvent(ActivityEvent e)
         /// <para>- Any registered <see cref="ActivityListener"/> with the <see cref="ActivityListener.ExceptionRecorder"/> callback that adds "exception.message", "exception.stacktrace", or "exception.type" tags
         /// will not have these tags overwritten, except by any subsequent <see cref="ActivityListener"/> that explicitly overwrites them.</para>
         /// </remarks>
-        public Activity AddException(Exception exception, TagList tags = default, DateTimeOffset timestamp = default)
+        public Activity AddException(Exception exception, in TagList tags = default, DateTimeOffset timestamp = default)
         {
             if (exception == null)
             {