Strict mode assignment to undefined reference.

src/x64/virtual-frame-x64.cc

Index: src/x64/virtual-frame-x64.cc
diff --git a/src/x64/virtual-frame-x64.cc b/src/x64/virtual-frame-x64.cc
index 3f7b1db7e5c0d6060bdc5b9a9630d172e5d8f5f0..31f9527a6de512ddf6814b2939f3a3767e06a073 100644
--- a/src/x64/virtual-frame-x64.cc
+++ b/src/x64/virtual-frame-x64.cc
@@ -1119,23 +1119,30 @@ Result VirtualFrame::CallKeyedLoadIC(RelocInfo::Mode mode) {
 }
 
 
-Result VirtualFrame::CallStoreIC(Handle<String> name, bool is_contextual) {
+Result VirtualFrame::CallStoreIC(Handle<String> name,
+                                 bool is_contextual,
+                                 StrictModeFlag strict_mode) {
   // Value and (if not contextual) receiver are on top of the frame.
   // The IC expects name in rcx, value in rax, and receiver in rdx.
-  Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize));
+  Handle<Code> ic(Builtins::builtin(strict_mode == kStrictMode
+      ? Builtins::StoreIC_Initialize_Strict
+      : Builtins::StoreIC_Initialize));
   Result value = Pop();
+  RelocInfo::Mode mode;
   if (is_contextual) {
     PrepareForCall(0, 0);
     value.ToRegister(rax);
     __ movq(rdx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX)));
     value.Unuse();
+    mode = RelocInfo::CODE_TARGET_CONTEXT;
   } else {
     Result receiver = Pop();
     PrepareForCall(0, 0);
     MoveResultsToRegisters(&value, &receiver, rax, rdx);
+    mode = RelocInfo::CODE_TARGET;
   }
   __ Move(rcx, name);
-  return RawCallCodeObject(ic, RelocInfo::CODE_TARGET);
+  return RawCallCodeObject(ic, mode);
 }