3 files changed, 25 insertions, 8 deletions
diff --git a/src/qml/compiler/qv4codegen.cpp b/src/qml/compiler/qv4codegen.cpp
index a0f1ce5879..8ede8a6818 100644
--- a/src/qml/compiler/qv4codegen.cpp
+++ b/src/qml/compiler/qv4codegen.cpp
@@ -2866,9 +2866,16 @@ void Codegen::Reference::storeAccumulator() const
         return;
     }
     case Name: {
-        Instruction::StoreName store;
-        store.name = unqualifiedNameIndex;
-        codegen->bytecodeGenerator->addInstruction(store);
+        Context *c = codegen->currentContext();
+        if (c->isStrict) {
+            Instruction::StoreNameStrict store;
+            store.name = unqualifiedNameIndex;
+            codegen->bytecodeGenerator->addInstruction(store);
+        } else {
+            Instruction::StoreNameSloppy store;
+            store.name = unqualifiedNameIndex;
+            codegen->bytecodeGenerator->addInstruction(store);
+        }
     } return;
     case Member:
         if (codegen->useFastLookups) {
diff --git a/src/qml/compiler/qv4instr_moth.cpp b/src/qml/compiler/qv4instr_moth.cpp
index db68c2d76f..52f2190959 100644
--- a/src/qml/compiler/qv4instr_moth.cpp
+++ b/src/qml/compiler/qv4instr_moth.cpp
@@ -173,9 +173,13 @@ void dumpBytecode(const char *code, int len, int nFormals)
             d << instr.index;
         MOTH_END_INSTR(GetGlobalLookup)
 
-        MOTH_BEGIN_INSTR(StoreName)
+        MOTH_BEGIN_INSTR(StoreNameSloppy)
             d << instr.name;
-        MOTH_END_INSTR(StoreName)
+        MOTH_END_INSTR(StoreNameSloppy)
+
+        MOTH_BEGIN_INSTR(StoreNameStrict)
+            d << instr.name;
+        MOTH_END_INSTR(StoreNameStrict)
 
         MOTH_BEGIN_INSTR(LoadElement)
             d << instr.base.dump(nFormals) << "[" << instr.index.dump(nFormals) << "]";
diff --git a/src/qml/compiler/qv4instr_moth_p.h b/src/qml/compiler/qv4instr_moth_p.h
index 52d0497926..d840cda090 100644
--- a/src/qml/compiler/qv4instr_moth_p.h
+++ b/src/qml/compiler/qv4instr_moth_p.h
@@ -85,7 +85,8 @@ QT_BEGIN_NAMESPACE
     F(LoadClosure, loadClosure) \
     F(LoadName, loadName) \
     F(GetGlobalLookup, getGlobalLookup) \
-    F(StoreName, storeName) \
+    F(StoreNameSloppy, storeNameSloppy) \
+    F(StoreNameStrict, storeNameStrict) \
     F(LoadElement, loadElement) \
     F(LoadElementA, loadElementA) \
     F(StoreElement, storeElement) \
@@ -322,7 +323,11 @@ union Instr
         MOTH_INSTR_HEADER
         int index;
     };
-    struct instr_storeName {
+    struct instr_storeNameSloppy {
+        MOTH_INSTR_HEADER
+        int name;
+    };
+    struct instr_storeNameStrict {
         MOTH_INSTR_HEADER
         int name;
     };
@@ -706,7 +711,8 @@ union Instr
     instr_loadClosure loadClosure;
     instr_loadName loadName;
     instr_getGlobalLookup getGlobalLookup;
-    instr_storeName storeName;
+    instr_storeNameSloppy storeNameSloppy;
+    instr_storeNameStrict storeNameStrict;
     instr_loadElement loadElement;
     instr_loadElementA loadElementA;
     instr_storeElement storeElement;