Re: [Boost-users] [review][fixed_string] FixedString review starts today

From: Peter Dimov (pdimov_at_[hidden])
Date: 2019-11-29 07:57:23

Andrzej Krzemienski wrote:

> On the other hand, if the goal is to provide a container suitable for 
> embedded operations, where you cannot afford throwing exceptions the same 
> way as you cannot afford heap allocation, one would expect the other 
> model.

On embedded, you compile with -fno-exceptions and add

namespace boost
{
    void throw_exception( std::exception const& ) { __builtin_trap(); }
}

There's no need to afford exceptions, you just need to be able to afford the 
potential loss in performance, basically one branch per append if not 
heroically optimized away.