https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102524
Bug ID: 102524
Summary: [modules] Missing diagnostic when an exported
namespace is empty
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: johelegp at gmail dot com
CC: johelegp at gmail dot com
Target Milestone: ---
This is specified at [module.interface].3:
> An exported declaration that is not a module-import-declaration
> shall declare at least one name.
GCC doesn't print any diagnostic (https://godbolt.org/z/oEbTjcfeo)
whereas Clang gives a warning (https://godbolt.org/z/ajszM74j9):
> `mod.cpp:2:18: warning: ISO C++20 does not permit a declaration that
> does not introduce any names to be exported [-Wexport-unnamed]`
