From 356aa46de6d6438468f684cf8363b892e9810168 Mon Sep 17 00:00:00 2001
From: Yaron Keren <yaron.keren@gmail.com>
Date: Tue, 19 May 2015 13:31:25 +0000
Subject: Prevent Cleanup() from running more than once.

llvm-svn: 237694
---
 llvm/lib/Support/Windows/Signals.inc | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'llvm/lib/Support/Windows')

diff --git a/llvm/lib/Support/Windows/Signals.inc b/llvm/lib/Support/Windows/Signals.inc
index d81d3c8b90b..26c3c6e111a 100644
--- a/llvm/lib/Support/Windows/Signals.inc
+++ b/llvm/lib/Support/Windows/Signals.inc
@@ -441,6 +441,9 @@ void llvm::sys::AddSignalHandler(void (*FnPtr)(void *), void *Cookie) {
 }
 
 static void Cleanup() {
+  if (CleanupExecuted)
+    return;
+
   EnterCriticalSection(&CriticalSection);
 
   // Prevent other thread from registering new files and directories for
-- 
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