Yohaï-Eliel Berreby yberreby

What is the Strict Aliasing Rule and Why do we care?

(OR Type Punning, Undefined Behavior and Alignment, Oh My!)

What is strict aliasing? First we will describe what is aliasing and then we can learn what being strict about it means.

In C and C++ aliasing has to do with what expression types we are allowed to access stored values through. In both C and C++ the standard specifies which expression types are allowed to alias which types. The compiler and optimizer are allowed to assume we follow the aliasing rules strictly, hence the term strict aliasing rule. If we attempt to access a value using a type not allowed it is classified as undefined behavior(UB). Once we have undefined behavior all bets are off, the results of our program are no longer reliable.

Unfortunately with strict aliasing violations, we will often obtain the results we expect, leaving the possibility the a future version of a compiler with a new optimization will break code we th

README

Create a template service file at /etc/systemd/system/[email protected]. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

The Scammiest Scam To Yet Anonymity Scam

I'm still holding out for this being a hoax, a big joke, and that they're going to cancel the kickstarter any minute. It'd be quite the cute "lessons learned" about anonymity scams. However, I will be treating it from here on out as a genuine scam. (As of May 2nd, the kickstarter has been cancelled, after the strangest attempt to reply to this imaginable. Good riddance.)

This absolutely ridiculous thing was brought to my attention by a friend and since it was late at night I thought I must be delirious in how absurdly over the top fake it seemed. So I slept on it, woke up, and found that it had gotten a thousand dollars more funding and was every bit as flabbergasting as I thought it was.

Since I realize that not everyone has spent their entire lives studying computers – and such people are the targets of such scams –

Rust developer tools - status and strategy

Availability and quality of developer tools are an important factor in the success of a programming language. C/C++ has remained dominant in the systems space in part because of the huge number of tools tailored to these lanaguages. Succesful modern languages have had excellent tool support (Java in particular, Scala, Javascript, etc.). Finally, LLVM has been successful in part because it is much easier to extend than GCC. So far, Rust has done pretty well with developer tools, we have a compiler which produces good quality code in reasonable time, good support for debug symbols which lets us leverage C++/lanaguge agnostic tools such as debuggers, profilers, etc., there are also syntax highlighting, cross-reference, code completion, and documentation tools.

In this document I want to layout what Rust tools exist and where to find them, highlight opportunities for tool developement in the short and long term, and start a discussion about where to focus our time an

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	#!/bin/bash

	################################
	# OS X Install ISO Creater #
	# #
	# Author: shela #
	################################

	#######################################
	# Declarations

	#!/bin/sh

	# To the extent possible under law, Viktor Szakats
	# has waived all copyright and related or neighboring rights to this
	# script.
	# CC0 - https://creativecommons.org/publicdomain/zero/1.0/
	# SPDX-License-Identifier: CC0-1.0

	# shellcheck disable=SC3040,SC2039
	set -o errexit -o nounset; [ -n "${BASH:-}${ZSH_NAME:-}" ] && set -o pipefail

	// Are you there god??/
	??=define _(please, help)
	??=define _____(i,m, v,e,r,y) r%:%:m
	??=define ____ _____(a,f,r,a,i,d)
	main(__)<%____(!_(-~-??-((-~-??-!__<<-
	??-!!__)<<-??-(!!__<<!!__))+-~-~-??--~-~
	-~-~-~-~-??-(-~-~-~-~-??-!!__<<-~!!__),-
	??-!__))<%??>%>_(__,___)??<____
	(printf("please let me die??/r%d bottle%s"
	" of bee%s""""??/n",(!(___

	#!/bin/bash
	#
	# What is that
	# ============
	#
	# This script will help you setting up your digital ocean
	# infrastructure with Ansible v2.0+ and DO API v2
	#
	# Usually, when working with DO, one is supposed to use digital_ocean.py
	# inventory file, and spin up instances in a playbook.

	location ~* \.(txt\|log\|xml\|css\|js)$ {
	add_header X-Robots-Tag noindex;
	}