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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Tue, 12 May 2020 12:11:56 +0100
Message-ID: <CAH6eHdRqZO9Yf2BUn9v+LZqGbToWL_ob9zxJsB+O0wQJsAC1Qg@mail.gmail.com>
Subject: Re: size of exception handling
To: Freddie Chopin <freddie_chopin@op.pl>
Cc: Florian Weimer <fweimer@redhat.com>, "gcc@gcc.gnu.org" <gcc@gcc.gnu.org>
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On Tue, 12 May 2020 at 11:48, Freddie Chopin wrote:
> To summarize. Current C++ exceptions have very huge, mostly "one-time"
> kind, cost on the size, even if not used at all by the user, mosly due
> to std::terminate() and all the string handling code inside it, as well
> as the unwind tables.

There is no string handling code in std::terminate:

namespace std
{
  typedef void (*terminate_handler) ();
  void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__));
}

void
__cxxabiv1::__terminate (std::terminate_handler handler) throw ()
{
  __try
    {
      handler ();
      std::abort ();
    }
  __catch(...)
    { std::abort (); }
}

void
std::terminate () throw()
{
  __terminate (get_terminate ());
}

Please clarify what you're talking about.