https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97358
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The original Firefox problematic template is:
template <typename... SpecialValueMappers>
ErrorResult ExtractErrorResult(SpecialValueMappers... aSpecialValueMappers) {
return mVariant.match(
[](ErrorResult& aException) { return std::move(aException); },
[aSpecialValueMappers...](const SpecialConstant<S>& aSpecialValue) {
return ErrorResult{aSpecialValueMappers(aSpecialValue)};
}...);
}
The ICE is because a local specialization for the capture proxy has not been
registered.
