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Initialization in C++: A Corner Case

Recently, I've been trying to find out the difference between copy-initialization (e.g. in return statements) and direct-initialization (e.g. in static_cast expressions). Besides the explicit keyword, the code posted by Johannes really caught my attention because recent versions of GCC and Clang exhibit different behaviors for the mentioned code. Upon further investigation, it may be surprising that these behaviors are somewhat intentional. In the following, I will try to explain this corner case of initialization in C++. This post may be a bit arcane. Anyway, have fun reading!

Introduction

Given the following code:

// -std=c++23

Howto

Install these programms

sudo apt-get install gnome-raw-thumbnailer ufraw-batch

Try now if everything works, and your thumbnails show up. If not, try the following part.

	#!/usr/bin/env python

	# Python port of the HiTechnic HTWay for ev3dev
	# Copyright (c) 2014-2015 G33kDude, David Lechner
	# HiTechnic HTWay is Copyright (c) 2010 HiTechnic


	import itertools
	import os
	import struct