Index: src/runtime.cc |
diff --git a/src/runtime.cc b/src/runtime.cc |
index cc5aeab78f55c46446b016f848fb60c3ceadc612..f2088e5574279821293c1315cf5a60d46dbe9b6c 100644 |
--- a/src/runtime.cc |
+++ b/src/runtime.cc |
@@ -6760,6 +6760,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_StringBuilderConcat) { |
ascii = false; |
} |
} else { |
+ ASSERT(!elt->IsTheHole()); |
return isolate->Throw(isolate->heap()->illegal_argument_symbol()); |
} |
if (increment > String::kMaxLength - position) { |