From acc5fa153d35c1340c0b22dc2b12e5c813feaabc Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Sat, 5 Dec 2009 22:16:51 +0000
Subject: Don't call back() on an empty vector.

llvm-svn: 90678
---
 clang/lib/Frontend/RewriteObjC.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'clang/lib/Frontend/RewriteObjC.cpp')

diff --git a/clang/lib/Frontend/RewriteObjC.cpp b/clang/lib/Frontend/RewriteObjC.cpp
index fc5ec2e9d06..08b54b22224 100644
--- a/clang/lib/Frontend/RewriteObjC.cpp
+++ b/clang/lib/Frontend/RewriteObjC.cpp
@@ -4591,8 +4591,7 @@ Stmt *RewriteObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
     //   for (id <FooProtocol> index in someArray) ;
     // This is because RewriteObjCForCollectionStmt() does textual rewriting 
     // and it depends on the original text locations/positions.
-    Stmt *ParentStmt = Stmts.back();
-    if (!ParentStmt || !isa<ObjCForCollectionStmt>(ParentStmt))
+    if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
       RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());
 
     // Blocks rewrite rules.
-- 
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