https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86578

            Bug ID: 86578
           Summary: requested alignment is dependent but declaration is
                    not dependent
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zhonghao at pku dot org.cn
  Target Milestone: ---

The code is as follow:

template <typename T> void Fun(T A) {
 typedef int __attribute__((__aligned__(A))) T1;
 int k1[__alignof__(T1)];
}

g++ accepts it, but clang++ rejects it:

code0.cpp:2:29: error: requested alignment is dependent but declaration is not
dependent
     typedef int __attribute__((__aligned__(A))) T1;
                                ^           ~
    1 error generated.

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