From: Sung Yoon Whang <suwhang@microsoft.com>
Date: Sun, 6 Jun 2021 03:35:12 +0000 (-0700)
Subject: Fix a NullRefException by finished process (#2338)
X-Git-Tag: submit/tizen/20220302.040122~25^2^2~81
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=080d27ee37c8e2a264a8d417dbb3ba94f0201028;p=platform%2Fcore%2Fdotnet%2Fdiagnostics.git

Fix a NullRefException by finished process (#2338)
---

diff --git a/src/Tools/dotnet-trace/CommandLine/Commands/CollectCommand.cs b/src/Tools/dotnet-trace/CommandLine/Commands/CollectCommand.cs
index 14c66b3fc..3764b1da9 100644
--- a/src/Tools/dotnet-trace/CommandLine/Commands/CollectCommand.cs
+++ b/src/Tools/dotnet-trace/CommandLine/Commands/CollectCommand.cs
@@ -312,7 +312,7 @@ namespace Microsoft.Diagnostics.Tools.Trace
                         // If the process is shutting down by itself print the return code from the process.
                         // Capture this before leaving the using, as the Dispose of the DiagnosticsClientHolder
                         // may terminate the target process causing it to have the wrong error code
-                        if (ProcessLauncher.Launcher.ChildProc.WaitForExit(5000))
+                        if (ProcessLauncher.Launcher.HasChildProc && ProcessLauncher.Launcher.ChildProc.WaitForExit(5000))
                         {
                             ret = ProcessLauncher.Launcher.ChildProc.ExitCode;
                             Console.WriteLine($"Process exited with code '{ret}'.");