Prevent Cleanup() from running more than once.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237694 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/Windows/Signals.inc b/lib/Support/Windows/Signals.inc
index d81d3c8b90bb14cdb09a5db75eca60fbb144c70b..26c3c6e111ab55039100760c2a3a71d84a55d70e 100644 (file)
--- a/lib/Support/Windows/Signals.inc
+++ b/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