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Groups > comp.lang.c++ > #86257

Using local variables in C callbacks

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What do you think about this ?

#include <iostream>
#include <vector>
#include <string>
#include <functional>
#include <link.h>

using namespace std;

int main()
{
	vector<string> images;
	auto fnDlIterate = bind(
		[&]( dl_phdr_info *image, size_t size ) -> int
		{
			try
			{
				images.emplace_back( image->dlpi_name );
			}
			catch( bad_alloc const & )
			{
				return 1;
			}
			return 0;
		}, placeholders::_1, placeholders::_2 );
	using fn_callback_t = decltype(fnDlIterate);
	if( dl_iterate_phdr(
		[]( dl_phdr_info *image, size_t size, void *pFn ) -> int
		{
			return (*(fn_callback_t *)pFn)( image, size );
		}, &fnDlIterate ) )
		return EXIT_FAILURE;
	for( string const &image : images )
		cout << "\"" << image << "\"" << endl;
}

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Thread

Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-11 17:18 +0200
  Re: Using local variables in C callbacks Muttley@dastardlyhq.com - 2022-09-11 15:45 +0000
    Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-11 17:51 +0200
      Re: Using local variables in C callbacks Muttley@dastardlyhq.com - 2022-09-11 15:53 +0000
        Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-11 17:57 +0200
          Re: Using local variables in C callbacks Tony Oliver <guinness.tony@gmail.com> - 2022-09-12 17:05 -0700
            Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-13 07:18 +0200
  Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-12 07:02 +0200
  Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-12 06:03 +0000
    Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-12 09:16 +0200
      Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-13 06:52 +0000
        Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-13 12:09 +0200
          Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-13 12:57 +0000
            Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-13 15:57 +0200
              Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-14 06:08 +0000
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-14 09:00 +0200
                Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-14 12:26 +0000
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-14 14:59 +0200
                Re: Using local variables in C callbacks David Brown <david.brown@hesbynett.no> - 2022-09-14 16:01 +0200
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-14 16:49 +0200
                Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-15 05:35 +0000
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-15 08:26 +0200
                Re: Using local variables in C callbacks scott@slp53.sl.home (Scott Lurndal) - 2022-09-15 14:09 +0000
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-15 16:56 +0200
                Re: Using local variables in C callbacks Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-15 05:43 -0700
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-15 16:02 +0200
                Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-16 06:08 +0000
                Re: Using local variables in C callbacks Bonita Montero <Bonita.Montero@gmail.com> - 2022-09-16 13:43 +0200
                Re: Using local variables in C callbacks Tim Rentsch <tr.17687@z991.linuxsc.com> - 2022-09-16 06:57 -0700
                Re: Using local variables in C callbacks Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-09-16 10:13 -0700
                Re: Using local variables in C callbacks "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-09-14 15:38 -0700
          Re: Using local variables in C callbacks Öö Tiib <ootiib@hot.ee> - 2022-09-13 22:20 -0700
        Re: Using local variables in C callbacks "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-09-13 12:48 -0700
          Re: Using local variables in C callbacks Juha Nieminen <nospam@thanks.invalid> - 2022-09-14 06:09 +0000
            Re: Using local variables in C callbacks "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2022-09-15 13:29 -0700

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