Index: lib/Support/DynamicLibrary.cpp
===================================================================
--- lib/Support/DynamicLibrary.cpp
+++ lib/Support/DynamicLibrary.cpp
@@ -14,6 +14,7 @@
 #include "llvm/Support/DynamicLibrary.h"
 #include "llvm-c/Support.h"
 #include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/iterator_range.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/Config/config.h"
 #include "llvm/Support/ManagedStatic.h"
Index: lib/Support/Unix/DynamicLibrary.inc
===================================================================
--- lib/Support/Unix/DynamicLibrary.inc
+++ lib/Support/Unix/DynamicLibrary.inc
@@ -15,7 +15,8 @@
 #include <dlfcn.h>
 
 DynamicLibrary::HandleSet::~HandleSet() {
-  for (void *Handle : Handles)
+  // Close the libraries in reverse order.
+  for (void *Handle : llvm::reverse_range(Handles))
     ::dlclose(Handle);
   if (Process)
     ::dlclose(Process);
Index: lib/Support/Windows/DynamicLibrary.inc
===================================================================
--- lib/Support/Windows/DynamicLibrary.inc
+++ lib/Support/Windows/DynamicLibrary.inc
@@ -23,7 +23,7 @@
 
 
 DynamicLibrary::HandleSet::~HandleSet() {
-  for (void *Handle : Handles)
+  for (void *Handle : llvm::reverse_range(Handles))
     FreeLibrary(HMODULE(Handle));
 
   // 'Process' should not be released on Windows.