https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122625

Nathaniel Shead <nshead at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |nshead at gcc dot gnu.org
   Last reconfirmed|                            |2025-11-13
             Status|UNCONFIRMED                 |NEW

--- Comment #5 from Nathaniel Shead <nshead at gcc dot gnu.org> ---
Confirmed; reduced:

  // a.cpp
  export module M;
  struct integral_constant {
    void f() const {}
  };
  struct span {
    template <int> static constexpr integral_constant __v{};
  };
  export inline void format() {
    span::__v<1>.f();
  }

  // b.cpp
  int main() {
    format();
  }

The reduced code works on 15.2, fails on trunk; I'll need to bisect to see what
caused the regression.

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