1 files changed, 2 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/MachineCodeEmitter.h b/include/llvm/CodeGen/MachineCodeEmitter.h
index 6bf72de0ff..e38eb061ba 100644
--- a/include/llvm/CodeGen/MachineCodeEmitter.h
+++ b/include/llvm/CodeGen/MachineCodeEmitter.h
@@ -168,7 +168,8 @@ public:
   /// emitString - This callback is invoked when a String needs to be
   /// written to the output stream.
   void emitString(const std::string &String) {
-    for (unsigned i = 0, N = String.size(); i < N; ++i) {
+    for (unsigned i = 0, N = static_cast<unsigned>(String.size());
+         i < N; ++i) {
       unsigned char C = String[i];
       emitByte(C);
     }