diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h
index 9c2b57f5a1d..109915653af 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -352,8 +352,8 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
       {
 #if __cpp_lib_is_constant_evaluated
 	if (std::is_constant_evaluated())
-	  for (_CharT& __c : _M_local_buf)
-	    __c = _CharT();
+	  for (size_type __i = 0; __i <= _S_local_capacity; ++__i)
+	    _M_local_buf[__i] = _CharT();
 #endif
 	return _M_local_data();
       }