From f883eb94e00d861927bcaed96fc1f2a63bbc865c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 14 May 2006 19:00:53 +0000
Subject: [PATCH] Bug noticed, by inspection.  Filename can be null.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28292 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/System/DynamicLibrary.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/System/DynamicLibrary.cpp b/lib/System/DynamicLibrary.cpp
index 056fed0eb38..9bec68e5a95 100644
--- a/lib/System/DynamicLibrary.cpp
+++ b/lib/System/DynamicLibrary.cpp
@@ -107,7 +107,8 @@ void DynamicLibrary::LoadLibraryPermanently(const char* filename) {
     a_handle = lt_dlopenext(filename);
 
   if (a_handle == 0)
-    throw std::string("Can't open :") + filename + ": " + lt_dlerror();
+    throw std::string("Can't open :") +
+          (filename ? filename : "<current process>") + ": " + lt_dlerror();
 
   lt_dlmakeresident(a_handle);