[Bug c/116728] c23 tag compatibility broken with pointers to incomplete types

[himehaieto at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116728

--- Comment #1 from Hime Haieto <himehaieto at gmail dot com> ---
This may possibly have some connections to the behaviour seen in PR116726.