[Bug c++/109824] aligned attribute lost when using it on a typedef of a struct if there was not an usage of the struct beforehand

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109824

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2023-05-12

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a better testcase:
```
struct a {
    int aa;
};
typedef struct a less_aligned_a __attribute__ ((aligned (1)));
static_assert(alignof(less_aligned_a) == 1);
struct a aa __attribute__((unused));
static_assert(alignof(less_aligned_a) == 1);
```
Which shows the issue.
The first static_assert works but the second one does not.