[Bug c++/66641] An instance of an attribute-specifier-seq implies a simple-declaration while C++11 permits attribute-declaration and using-directive

[andrey.vul at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66641

--- Comment #1 from Andrey V <andrey.vul at gmail dot com> ---
Citations for grammar: 7.1 [dcl.spec]; 7.3.4 [namespace.udir]