From bd6dc7a086142fec46b28b8c1f4e75a0d9500f6d Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 9 Sep 2008 21:38:40 +0000
Subject: [PATCH] Add assertion check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56016 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/PassManager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp
index 20fc68c4748..29a6df0d6a7 100644
--- a/lib/VMCore/PassManager.cpp
+++ b/lib/VMCore/PassManager.cpp
@@ -1581,7 +1581,7 @@ void ModulePass::assignPassManager(PMStack &PMS,
     else
       break;
   }
-
+  assert(!PMS.empty() && "Unable to find appropriate Pass Manager");
   PMS.top()->add(this);
 }