Throw when calling an undefined function

src/parser.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // TODO(titzer): remove this include dependency
@@ skipping 1121 matching lines @@
   // The var declarations are hoisted to the function scope, but originate from
   // a scope where the name has also been let bound or the var declaration is
   // hoisted over such a scope.
   void CheckConflictingVarDeclarations(Scope* scope, bool* ok);
 
   // Insert initializer statements for var-bindings shadowing parameter bindings
   // from a non-simple parameter list.
   void InsertShadowingVarBindingInitializers(Block* block);
 
   // Implement sloppy block-scoped functions, ES2015 Annex B 3.3
-  void InsertSloppyBlockFunctionVarBindings(Scope* scope, bool* ok);
+  void InsertSloppyBlockFunctionVarBindings(Scope* scope, ZoneList<Statement*>* body, bool* ok);
 
   // Parser support
   VariableProxy* NewUnresolved(const AstRawString* name, VariableMode mode);
   Variable* Declare(Declaration* declaration,
                     DeclarationDescriptor::Kind declaration_kind, bool resolve,
                     bool* ok, Scope* declaration_scope = nullptr);
 
   bool TargetStackContainsLabel(const AstRawString* label);
   BreakableStatement* LookupBreakTarget(const AstRawString* label, bool* ok);
   IterationStatement* LookupContinueTarget(const AstRawString* label, bool* ok);
@@ skipping 221 matching lines @@
     if (!*ok) return;
     if (init_block != nullptr) {
       body->Add(init_block, parser_->zone());
     }
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSER_H_