Index: llvm/trunk/include/llvm/MC/MCAsmInfo.h
===================================================================
--- llvm/trunk/include/llvm/MC/MCAsmInfo.h
+++ llvm/trunk/include/llvm/MC/MCAsmInfo.h
@@ -491,7 +491,7 @@
   StringRef getPrivateLabelPrefix() const { return PrivateLabelPrefix; }
 
   bool hasLinkerPrivateGlobalPrefix() const {
-    return LinkerPrivateGlobalPrefix[0] != '\0';
+    return !LinkerPrivateGlobalPrefix.empty();
   }
 
   StringRef getLinkerPrivateGlobalPrefix() const {