The return address is not necessarily a function pointer. Typically the return address is within a function with the stackframe set up, etc.   Those functions - as you show them - would be called from within the function, which would return, itself? If you intend to first go to a different function and then jumping back to the original calling function, why not specifying this directly? Or first call the intermediate function and then return?   -----Ursprüngliche Nachricht----- Von:Frederick Virchanza Gotham via Std-Proposals <std-proposals_at_[hidden]> Gesendet:Do 28.11.2024 23:17 Betreff:Re: [std-proposals] #include <debug> An:std-proposals_at_[hidden]; CC:Frederick Virchanza Gotham <cauldwell.thomas_at_[hidden]>; On Thu, Nov 28, 2024 at 5:39 PM Thiago Macieira wrote: > > That makes even less sense. How can you have a reference to a register? Having put more thought into it, it would have to be two separate functions:    auto get_return_address(void) -> void (*)(void);    void set_return_address(  void (*)(void)  ); You mentioned Control Flow Enforcement -- which by the way I've never encountered -- but of course you would turn that off when debugging. -- Std-Proposals mailing list Std-Proposals_at_[hidden] https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals