mmomtchev

test	function size	execution time
cc-O0-no_unwind	242 bytes	181.44
cc-O0-unwind_dontcare	274 bytes	216.39
cc-O0-unwind_noexcept	230 bytes	215.46
cc-O0-unwind_throwing	353 bytes	215.35
cc-O0-unwind_catching	385 bytes	215.07
cc-O2-no_unwind	108 bytes	25.74
cc-O2-unwind_dontcare	132 bytes	26.05
cc-O2-unwind_noexcept	108 bytes	25.78

mmomtchev

#include <stdexcept>
#include <stdio.h>

static int objects;

class IntWithDestructor {
  int val;

public:
  IntWithDestructor() : val{} { objects++; }

mmomtchev

test	function size (bytes)	execution time (seconds)
test-cc-O3-no_unwind	679 bytes	21.30
test-cc-O3-unwind_catching	723 bytes	19.11
test-cc-O3-unwind_dontcare	679 bytes	21.28
test-cc-O3-unwind_noexcept	679 bytes	21.29
test-cc-O3-unwind_throwing	747 bytes	21.30
test-c-O3	679 bytes	21.27

mmomtchev

test	function size (bytes)	execution time (seconds)
test-cc-O2-no_unwind	679 bytes	21.31
test-cc-O2-unwind_catching	172 bytes	29.78
test-cc-O2-unwind_dontcare	679 bytes	21.30
test-cc-O2-unwind_noexcept	679 bytes	21.36
test-cc-O2-unwind_throwing	159 bytes	23.05
test-c-O2	679 bytes	21.29

mmomtchev

test	function size (bytes)	execution time (seconds)
test-cc-O0-no_unwind	91 bytes	55.88
test-cc-O0-unwind_catching	211 bytes	68.59
test-cc-O0-unwind_dontcare	89 bytes	54.04
test-cc-O0-unwind_noexcept	89 bytes	55.92
test-cc-O0-unwind_throwing	176 bytes	62.99
test-c-O0	89 bytes	54.32

mmomtchev

#include <stdexcept>
#include <stdio.h>

static int result;

int fibonacci(int i) {
  // Optimize the branch prediction
  if (i <= 1) [[unlikely]] {
    if (i < 0)
      throw std::runtime_error{"Negative number"};

mmomtchev

// Does std::logic_error copy the string
// or takes a reference?
//
// The C++ specifications are deliberately vague
//
// With MSVC, try compiling this with 1 and with 0
// You will be very surprised
//
#define _HAS_EXCEPTIONS 1
#include <stdexcept>

mmomtchev

/**
 * Transform a single bison item to named references
 * 
 * For example to transform only "c_decl"
 * 
 * node transform.js Source/CParse/parser.y c_decl Source/CParse/parser.y
 */

const fs = require('fs');

mmomtchev

#include <Magick++.h>
#include <exception>
#include <functional>
#include <string>

typedef std::function<const char *()> MakeErr;

class LambdaException : public std::exception {
  MakeErr get_err;

mmomtchev

#include <iostream>

int main() {
  auto err = std::logic_error("some error");
  std::cout << err.what() << std::endl;

  // using the derived copy constructor
  std::logic_error err2 = err;
  std::cout << err2.what() << std::endl;