Classes: Partial fix for constructor not calling super

src/full-codegen.cc

Index: src/full-codegen.cc
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index 58e5e978abf2dd7b73363378ccef7d1d4e9780f6..7adb659315e942b13bfc84fe3b5f2503980b8ff8 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -820,12 +820,16 @@ int FullCodeGenerator::DeclareGlobalsFlags() {
 
 
 void FullCodeGenerator::SetFunctionPosition(FunctionLiteral* fun) {
-  CodeGenerator::RecordPositions(masm_, fun->start_position());
+  if (fun->start_position() != RelocInfo::kNoPosition) {
+    CodeGenerator::RecordPositions(masm_, fun->start_position());
+  }
 }
 
 
 void FullCodeGenerator::SetReturnPosition(FunctionLiteral* fun) {
-  CodeGenerator::RecordPositions(masm_, fun->end_position() - 1);
+  if (fun->end_position() != RelocInfo::kNoPosition) {
+    CodeGenerator::RecordPositions(masm_, fun->end_position() - 1);
+  }
 }
 
 
@@ -1575,11 +1579,7 @@ void FullCodeGenerator::VisitClassLiteral(ClassLiteral* lit) {
     __ Push(isolate()->factory()->the_hole_value());
   }
 
-  if (lit->constructor() != NULL) {
-    VisitForStackValue(lit->constructor());
-  } else {
-    __ Push(isolate()->factory()->undefined_value());
-  }
+  VisitForStackValue(lit->constructor());
 
   __ Push(script());
   __ Push(Smi::FromInt(lit->start_position()));