From: Zoltan Varga <vargaz@gmail.com>
Date: Tue, 5 Jan 2021 15:46:28 +0000 (-0500)
Subject: Avoid an exception in Exception.GetCaptureState() if the stack trace is empty, it... 
X-Git-Tag: submit/tizen/20210909.063632~3949
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4c13a9ddf4ef99bbce83acb66f6b3d8943d99214;p=platform%2Fupstream%2Fdotnet%2Fruntime.git

Avoid an exception in Exception.GetCaptureState() if the stack trace is empty, it can happen on wasm+aot. (#46539)
---

diff --git a/src/mono/netcore/System.Private.CoreLib/src/System/Exception.Mono.cs b/src/mono/netcore/System.Private.CoreLib/src/System/Exception.Mono.cs
index dbe3dcb..8bd7cd6 100644
--- a/src/mono/netcore/System.Private.CoreLib/src/System/Exception.Mono.cs
+++ b/src/mono/netcore/System.Private.CoreLib/src/System/Exception.Mono.cs
@@ -75,7 +75,8 @@ namespace System
             if (_traceIPs != null)
             {
                 stackFrames = Diagnostics.StackTrace.get_trace(this, 0, true);
-                stackFrames[stackFrames.Length - 1].isLastFrameFromForeignException = true;
+                if (stackFrames.Length > 0)
+                    stackFrames[stackFrames.Length - 1].isLastFrameFromForeignException = true;
 
                 if (foreignExceptionsFrames != null)
                 {