https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99000
Nathan Sidwell <nathan at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |SUSPENDED
Last reconfirmed| |2021-02-08
Ever confirmed|0 |1
--- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
You're hitting this:
@emph{G++'s modules support is not complete.} Other than bugs, the
known missing pieces are:
....
@item Textual merging of reachable GM entities
Entities may be multiply defined across different header-units.
These must be de-duplicated, and this is implemented across imports,
or when an import redefines a textually-defined entity. However the
reverse is not implemented---textually redefining an entity that has
been defined in an imported header-unit. A redefinition error is
emitted.
