[Bug c++/102345] [modules] Cannot define a module interface unit for anything in <new>

["redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102345

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-09-15
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The first problem is demonstrated by:

export module newdel;
namespace std
{
  using size_t = decltype(sizeof(0));
  enum class align_val_t : size_t;
}


new.cc:5:28: error: cannot define ‘enum class std::align_val_t’ in different
module
    5 |   enum class align_val_t : size_t;
      |                            ^~~~~~
<built-in>: note: declared here
new.cc:5: confused by earlier errors, bailing out
Preprocessed source stored into /tmp/cc4qIyxE.out file, please attach this to
your bugreport.


This is fixed by Jason's patch in PR 48396 comment 4.