diff --git a/lib/AST/Stmt.cpp b/lib/AST/Stmt.cpp
index 7c69a79..dba6b08 100644
--- a/lib/AST/Stmt.cpp
+++ b/lib/AST/Stmt.cpp
@@ -215,8 +215,9 @@
 /// true, otherwise return false.
 unsigned AsmStmt::AnalyzeAsmString(llvm::SmallVectorImpl<AsmStringPiece>&Pieces,
                                    ASTContext &C, unsigned &DiagOffs) const {
-  const char *StrStart = getAsmString()->getStrData();
-  const char *StrEnd = StrStart + getAsmString()->getByteLength();
+  llvm::StringRef Str = getAsmString()->getString();
+  const char *StrStart = Str.begin();
+  const char *StrEnd = Str.end();
   const char *CurPtr = StrStart;
 
   // "Simple" inline asms have no constraints or operands, just convert the asm
diff --git a/lib/AST/StmtDumper.cpp b/lib/AST/StmtDumper.cpp
index 4b7c8f0..3707b61 100644
--- a/lib/AST/StmtDumper.cpp
+++ b/lib/AST/StmtDumper.cpp
@@ -429,8 +429,7 @@
   if (Str->isWide())
     OS << "L";
   OS << '"';
-  OS.write_escaped(llvm::StringRef(Str->getStrData(),
-                                   Str->getByteLength()));
+  OS.write_escaped(Str->getString());
   OS << '"';
 }
 
diff --git a/lib/AST/StmtPrinter.cpp b/lib/AST/StmtPrinter.cpp
index 7f497a3..62336ec 100644
--- a/lib/AST/StmtPrinter.cpp
+++ b/lib/AST/StmtPrinter.cpp
@@ -621,8 +621,10 @@
   OS << '"';
 
   // FIXME: this doesn't print wstrings right.
-  for (unsigned i = 0, e = Str->getByteLength(); i != e; ++i) {
-    unsigned char Char = Str->getStrData()[i];
+  llvm::StringRef StrData = Str->getString();
+  for (llvm::StringRef::iterator I = StrData.begin(), E = StrData.end(); 
+                                                             I != E; ++I) {
+    unsigned char Char = *I;
 
     switch (Char) {
     default: