2.1.87. ‑‑[no_]old_specializations
This option controls the acceptance of old‑style template specializations in C++.
Old‑style template specializations do not use the template<> syntax.
Note
The option --old_specializations is provided only as a migration aid for legacy source code that does not conform to the C++ standard. Its use is not recommended.
This option is effective only if the source language is C++.
The default is ‑‑no_old_specializations.