[corlib]: Fix race condition in ExceptionDispatchInfo. (#5279)

mono · Oct 13, 2017 · 38da0b3 · 38da0b3
1 parent b21ae3e
commit 38da0b3
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/...lass/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs b/...lass/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs
@@ -47,10 +47,11 @@ private ExceptionDispatchInfo(Exception exception)
             // Copy over the details we need to save.
             m_Exception = exception;
 #if MONO
-			var count = exception.captured_traces == null ? 0 : exception.captured_traces.Length;
+			var traces = exception.captured_traces;
+			var count = traces == null ? 0 : traces.Length;
 			var stack_traces = new System.Diagnostics.StackTrace [count + 1];
 			if (count != 0)
-				Array.Copy (exception.captured_traces, 0, stack_traces, 0, count);
+				Array.Copy (traces, 0, stack_traces, 0, count);
 
 			stack_traces [count] = new System.Diagnostics.StackTrace (exception, 0, true);
 			m_stackTrace = stack_traces;