Open source

SvyatoslavMC December 2, 2019 at 09:39 AM

Checking the Ark Compiler Recently Made Open-Source by Huawei

• PVS-Studio corporate blog,
• Open source,
• C++,
• Compilers,
• C

During the summer of 2019, Huawei gave a series of presentations announcing the Ark Compiler technology. The company claims that this open-source project will help developers make the Android system and third-party software much more fluent and responsive. By tradition, every new promising open-source project goes through PVS-Studio for us to evaluate the quality of its code.

Introduction

The Ark Compiler was first announced by Huawei at the launch of the new smartphone models P30 and P30 Pro. It is claimed that the Ark Compiler will improve the fluency of the Android system by 24% and response speed by 44%. Third-party Android applications will also gain a 60% speed-up after recompilation with the Ark Compiler. The open-source version of the project is called OpenArkCompiler; its source code is available on Gitee, a Chinese fork of GitHub.

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romankh3 November 12, 2019 at 12:16 PM

How did the test task become a production library

• Open source,
• Java,
• GitHub

• From sandbox

Hello everyone!

Today I'm going to tell about how is test task to job interview became the library Image Comparison. It's an open-source library, which is hosting on GitHub.



Before I start, let me introduce myself. My name is Roman. I'm a husband and father. I'm a software engineer in Epam Systems with 4 years of experience in IT.

The main idea of this topic is to tell, that creating an open-source product it's not wasting time, no! It's an amazing experience, which is going from all the open-source community. It's a time when you're a developer, project manager, product manager in one head.

While this library is growing I have been working with people from more than 10(!!) countries, such as the USA, Germany, Chine, India, Russia, Ukraine, etc.

Let's move on from the start of this story…

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Enthralling Open Source Platforms for Developing Mobile Applications

• Open source,
• Development of mobile applications

• Tutorial

Codes are the blocks of instructions that convey your intention to the computer. It is coding that helps you get the best out of the machines. Thus every, program or software is a creation of codes and the way they are structured and written defines the specialty of that software.

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GGribkov October 31, 2019 at 12:55 PM

On request of Embedded Developers: Detecting Errors in Amazon FreeRTOS

• PVS-Studio corporate blog,
• Open source,
• System Programming,
• C,
• Programming microcontrollers

Anyone who programs microcontrollers probably knows about FreeRTOS, or at least heard of this operating system. Amazon developers decided to enhance the abilities of this operating system to work with AWS Internet of Things services. This is how Amazon FreeRTOS appeared. We, developers of the PVS-Studio static code analyzer, were asked by mail and in comments to check these projects. Well, now get what you asked for. Keep reading to find out what came out of it.

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msgeek October 31, 2019 at 10:00 AM

Now is the time to make a fresh new Windows Terminal profiles.json

• Microsoft corporate blog,
• Open source,
• JavaScript,
• Development for Windows

I've been talking about it for months, but in case you haven't heard, there's a new Windows Terminal in town. You can download it and start using it now from the Windows Store. It's free and open source.

At the time of this writing, Windows Terminal is around version 0.5. It's not officially released as a 1.0 so things are changing all the time.

Here's your todo - Have you installed the Windows Terminal before? Have you customize your profile.json file? If so, I want you to DELETE your profiles.json!

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ekaterinanikiforova October 29, 2019 at 09:46 AM

Checking the OpenCvSharp Wrapper for OpenCV with PVS-Studio

• PVS-Studio corporate blog,
• Open source,
• .NET,
• C#,
• Development for Windows

OpenCV is an open-source library of computer vision and image processing algorithms and general-purpose numerical algorithms. The library is well known among C++ developers. Besides C++, there are also versions for Python, Java, Ruby, Matlab, Lua, and other languages. Since C#, which is the language I specialize in, is not on that list, I chose OpenCvSharp, a C# wrapper of OpenCV, to check it with PVS-Studio. The results of that check are discussed in this article.

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SvyatoslavMC October 22, 2019 at 10:05 AM

Analyzing the Code of ROOT, Scientific Data Analysis Framework

• PVS-Studio corporate blog,
• Open source,
• C++,
• C,
• Big Data

While Stockholm was holding the 118th Nobel Week, I was sitting in our office, where we develop the PVS-Studio static analyzer, working on an analysis review of the ROOT project, a big-data processing framework used in scientific research. This code wouldn't win a prize, of course, but the authors can definitely count on a detailed review of the most interesting defects plus a free license to thoroughly check the project on their own.

Introduction

ROOT is a modular scientific software toolkit. It provides all the functionalities needed to deal with big data processing, statistical analysis, visualisation and storage. It is mainly written in C++. ROOT was born at CERN, at the heart of the research on high-energy physics. Every day, thousands of physicists use ROOT applications to analyze their data or to perform simulations.

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ekaterinanikiforova October 8, 2019 at 11:19 AM

Checking Telerik UI for UWP as a Way to Get Started with PVS-Studio

• PVS-Studio corporate blog,
• Open source,
• .NET,
• C#,
• Development for Windows

It has become a tradition for newly employed developers on the PVS-Studio team to start off by writing an article reviewing bugs found by the analyzer in some open-source project. Telerik UI for UWP is the project picked for today's review.

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Checking Telegram Open Network with PVS-Studio

• PVS-Studio corporate blog,
• Open source,
• Payment systems,
• C++,
• C

Telegram Open Network (TON) is a platform by the same team that developed the Telegram messenger. In addition to the blockchain, TON provides a large set of services. The developers recently made the platform's code, which is written in C++, publicly available and uploaded it to GitHub. We decided to check the project before its official release.

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SvyatoslavMC October 2, 2019 at 09:16 AM

Celestia: Bugs' Adventures in Space

• PVS-Studio corporate blog,
• Open source,
• C++,
• Astronautics,
• Astronomy

Celestia is a three-dimensional space simulator. Simulation of the space allows exploring our universe in three dimensions. Celestia is available on Windows, Linux and macOS. The project is very small and PVS-Studio detected few defects in it. Despite this fact, we'd like to pay attention to it, as it's a popular educational project and it will be rather useful to somehow improve it. By the way, this program is used in popular films, series and programs for showing space. This fact, in turns, raises requirements to the code quality.

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SvyatoslavMC September 27, 2019 at 10:04 AM

Dark theme of Thunderbird as a reason to run a code analyzer

• PVS-Studio corporate blog,
• Instant Messaging,
• Open source,
• C++,
• C

The adventures with the Mozilla Thunderbird mail client began with automatic update to version 68.0. More text in pop-up notifications and default dark theme are the notable features of this version. Occasionally I found an error that I immediately craved to detect with static analysis. This became the reason to go for another check of the project source code using PVS-Studio. It so happened that by the time of the analysis, the bug had already been fixed. However, since we've paid some attention to the project, there's no reason not to write about other found defects.

Introduction

The dark theme of the new Thunderbird version looks pretty. I like dark themes. I've already switched to them in messengers, Windows, macOS. Soon iPhone will be updated to iOS 13 with a dark theme. For this reason I even had to change my iPhone 5S for a newer model. In practice, it turned out that a dark theme requires more effort for developers to pick up the colors of the interface. Not everyone can handle it the first time.

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ryan0852 September 10, 2019 at 10:19 AM

Important Things to Know About Tensorflow 2.0

• Open source,
• Development of mobile applications,
• Machine learning,
• Mobile applications design,
• Artificial Intelligence

Deep Learning applications have changed a lot of things. Some which give hope for a brighter future, and some which raise suspicions. However, for developers, the growth of deep learning applications has made them more perplexed about choosing the best among so many deep learning frameworks out there.

TensorFlow is one of the deep learning frameworks that comes in mind. It is arguably the most popular deep learning framework out there. Nothing justifies the statement better than the fact that Tensorflow is used by the likes of Uber, Nvidia, Gmail among other big corporations for developing state-of-the-art deep learning applications.

But right now, I am on a quest to find whether it indeed is the best deep learning framework. Or perhaps find what makes it the best out of all other frameworks it competes against.

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How to use MIDI for web in short

• Web design,
• Open source,
• JavaScript,
• WebGL,
• Sound

MIDI player

• Use MIDI parser to read notes from MIDI file
• Use WebAudioFont to play musical instruments in a browser
• See result

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ValeryKomarov August 29, 2019 at 11:44 AM

Analysis of the Apache Dubbo RPC Framework by the PVS-Studio Static Code Analyzer

• PVS-Studio corporate blog,
• Open source,
• Programming,
• Java,
• Apache

Apache Dubbo is one of the most popular Java projects on GitHub. It's not surprising. It was created 8 years ago and is widely applied as a high-performance RPC environment. Of course, most of the bugs in its code have long been fixed and the quality of the code is maintained at a high level. However, there is no reason to opt out of checking such an interesting project using the PVS-Studio static code analyzer. Let's see how it turned out.

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MrDvorak August 22, 2019 at 10:39 AM

How to set up PVS-Studio in Travis CI using the example of PSP game console emulator

• PVS-Studio corporate blog,
• Open source,
• C++,
• Game development,
• Cloud services

Travis CI is a distributed web service for building and testing software that uses GitHub as a source code hosting service. In addition to the above scripts, you can add your own, thanks to the extensive configuration options. In this article we will set up Travis CI for working with PVS-Studio by the example of PPSSPP code.

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GGribkov August 21, 2019 at 04:25 PM

An Easy Way to Make Money on Bug Bounty

• PVS-Studio corporate blog,
• Information Security,
• Open source,
• Programming,
• Lifehacks for geeks

SvyatoslavMC August 19, 2019 at 09:21 AM

CMake: the Case when the Project's Quality is Unforgivable

• PVS-Studio corporate blog,
• Open source,
• C++,
• C,
• Build automation

CMake is a cross-platform system for automating project builds. This system is much older than the PVS-Studio static code analyzer, but no one has tried to apply the analyzer on its code and review the errors. As it turned out, there are a lot of them. The CMake audience is huge. New projects start on it and old ones are ported. I shudder to think of how many developers could have had any given error.

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PVS-Studio Visits Apache Hive

• PVS-Studio corporate blog,
• Information Security,
• Open source,
• Java,
• Big Data

For the past ten years, the open-source movement has been one of the key drivers of the IT industry's development, and its crucial component. The role of open-source projects is becoming more and more prominent not only in terms of quantity but also in terms of quality, which changes the very concept of how they are positioned on the IT market in general. Our courageous PVS-Studio team is not sitting idly and is taking an active part in strengthening the presence of open-source software by finding hidden bugs in the enormous depths of codebases and offering free license options to the authors of such projects. This article is just another piece of that activity! Today we are going to talk about Apache Hive. I've got the report — and there are things worth looking at.

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foto_shooter August 13, 2019 at 05:46 PM

Checking the .NET Core Libraries Source Code by the PVS-Studio Static Analyzer

• PVS-Studio corporate blog,
• Open source,
• .NET,
• C#,
• Development for Windows

.NET Core libraries is one of the most popular C# projects on GitHub. It's hardly a surprise, since it's widely known and used. Owing to this, an attempt to reveal the dark corners of the source code is becoming more captivating. So this is what we'll try to do with the help of the PVS-Studio static analyzer. What do you think – will we eventually find something interesting?

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foto_shooter August 8, 2019 at 11:23 AM

The story of how PVS-Studio found an error in the library used in… PVS-Studio

• PVS-Studio corporate blog,
• Open source,
• .NET,
• C#,
• Development for Windows

This is a short story about how PVS-Studio helped us find an error in the source code of the library used in PVS-Studio. And it was not a theoretical error but an actual one — the error appeared in practice when using the library in the analyzer.

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