Driver: CCC_ADD_ARGS could end up using dangling pointers.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68805 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/driver/driver.cpp b/tools/driver/driver.cpp
index 3c75bb0..94fcf7c 100644
--- a/tools/driver/driver.cpp
+++ b/tools/driver/driver.cpp
@@ -86,8 +86,8 @@
   llvm::OwningPtr<Compilation> C;
 
   // Handle CCC_ADD_ARGS, a comma separated list of extra arguments.
+  std::set<std::string> SavedStrings;
   if (const char *Cur = ::getenv("CCC_ADD_ARGS")) {
-    std::set<std::string> SavedStrings;
     std::vector<const char*> StringPointers;
 
     // FIXME: Driver shouldn't take extra initial argument.