Index: src/runtime.cc |
diff --git a/src/runtime.cc b/src/runtime.cc |
index d8b9702bf3a7e759ec6723cf9169b37f679fac96..6e93e58620d04564d04255dcef9571b17540b104 100644 |
--- a/src/runtime.cc |
+++ b/src/runtime.cc |
@@ -6769,6 +6769,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_StringBuilderConcat) { |
ascii = false; |
} |
} else { |
+ ASSERT(!elt->IsTheHole()); |
return isolate->Throw(isolate->heap()->illegal_argument_symbol()); |
} |
if (increment > String::kMaxLength - position) { |