Prevent segfault on undefined inline runtime call.

src/parser.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4786 matching lines @@
 
   // Check that the expected number of arguments are being passed.
   if (function != NULL &&
       function->nargs != -1 &&
       function->nargs != args->length()) {
     ReportMessage("illegal_access", Vector<const char*>::empty());
     *ok = false;
     return NULL;
   }
 
+  // Check that the function is defined if it's a inline runtime call.

[Michael Starzinger, 2012/08/13 19:04:54]

"[...] it's an inline [...]"

+  if (function == NULL && name->Get(0) == '_') {
+    ReportMessage("not_defined", Vector<Handle<String> >(&name, 1));
+    *ok = false;
+    return NULL;
+  }
+
   // We have a valid intrinsics call or a call to a builtin.
   return factory()->NewCallRuntime(name, function, args);
 }
 
 
 bool Parser::peek_any_identifier() {
   Token::Value next = peek();
   return next == Token::IDENTIFIER ||
          next == Token::FUTURE_RESERVED_WORD ||
          next == Token::FUTURE_STRICT_RESERVED_WORD;
@@ skipping 1266 matching lines @@
       ASSERT(info->isolate()->has_pending_exception());
     } else {
       result = parser.ParseProgram();
     }
   }
   info->SetFunction(result);
   return (result != NULL);
 }
 
 } }  // namespace v8::internal