C++

Rualark December 9, 2019 at 01:46 PM

Quick reference of C++ value categories: Part 1

• Programming,
• C++

• From sandbox

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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PVS-Studio in the Clouds: GitLab CI/CD

• PVS-Studio corporate blog,
• C++,
• DevOps

This article continues the series of publications on usage of PVS-Studio in cloud systems. This time we'll look at the way the analyzer works along with GitLab CI, which is a product made by GitLab Inc. Static analyzer integration in a CI system allows detecting bugs right after the project build and is a highly effective way to reduce the cost of finding bugs.

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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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n0mo October 15, 2019 at 03:38 PM

MacOS 10.15 no longer supports 32-bit apps. What can you do?

• PVS-Studio corporate blog,
• Programming,
• Development for iOS,
• C++

On October 7, 2019, Apple released a new version of its Mac operating system, macOS Catalina. Version 10.15 contains many changes and improvements. One of the significant is the complete phasing out of 32-bit applications. As a developer of such macOS apps, what can you do? That's right, port the app to the 64-bit platform. Will the application work properly from the first attempt? Perhaps, it's possible. Depends on the complexity and amount of the code. But most likely, developers will face a lot of non-obvious errors, which can previously detected using PVS-Studio.

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Ilya_Gainulin October 7, 2019 at 03:12 PM

PVS-Studio in the Clouds: CircleCI

• PVS-Studio corporate blog,
• C++,
• DevOps,
• Development for Windows

This is a new piece of our series of articles about using the PVS-Studio static analyzer with cloud CI systems. Today we are going to look at another service, CircleCI. We'll take the Kodi media player application as a test project and see if we can find any interesting bugs in its source code.

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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 Systems,
• 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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SvyatoslavMC September 16, 2019 at 09:20 AM

One Day from PVS-Studio User Support

• PVS-Studio corporate blog,
• C++,
• C

We welcome any chatting on code quality. Our clients, students, and other users from all corners of the Internet write to us. Regardless of the country, time zone or language. Well, speaking language, not programming. Among programming languages, we are so far interested in a limited set. Right now, it's C, C++, C# and Java. There are many benefits from communication. We implement some users' suggestions immediately, because they are really useful. Often we just lend a hand with someone's project by explaining analyzer warnings, which end up being errors. This note is about such case.

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Ilya_Gainulin September 6, 2019 at 02:08 PM

PVS-Studio Usage when Checking Unreal Engine Projects on the Windows OS

• PVS-Studio corporate blog,
• C++,
• Game development,
• Unreal Engine,
• Development for Windows

This article focuses on the specifics of checking Unreal Engine projects with the PVS-Studio static analyser on the Windows operating system: how to install the analyser, check a project, where and how to view an error report.

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SvyatoslavMC September 4, 2019 at 04:48 PM

PVS-Studio 7.04

• PVS-Studio corporate blog,
• C++,
• C,
• DevOps

Summer is not only a holiday season, but also time of fruitful work. Sunny days are so inspiring that there's enough energy both for late walks and large code commits. The second summer PVS-Studio 7.04 release turned out to be quite large, so we suggest for your attention this press release, in which we'll tell you about everything.

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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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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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YMinaev August 6, 2019 at 11:17 AM

Getting Started with the PVS-Studio Static Analyzer for C++ Development under Linux

• PVS-Studio corporate blog,
• C++,
• C,
• Development for Linux,
• DevOps

PVS-Studio supports analyzing projects developed in C, C++, C#, and Java. You can use the analyzer under Windows, Linux, and macOS. This small article will tell you the basics of analyzing C and C++ code in Linux environment.

Installation

There are different ways to install PVS-Studio under Linux, depending on your distro type. The most convenient and preferred method is to use the repository, since it allows auto-updating the analyzer upon releasing new versions. Another option is to use the installation package, which you can get here.

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PVS-Studio Looked into the Red Dead Redemption's Bullet Engine

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

Nowadays there is no need to implement the physics of objects from scratch for game development because there are a lot of libraries for this purpose. Bullet was actively used in many AAA games, virtual reality projects, various simulations and machine learning. And it is still used, being, for example, one of the Red Dead Redemption and Red Dead Redemption 2 engines. So why not check the Bullet with PVS-Studio to see what errors static analysis can detect in such a large-scale physics simulation project.

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SvyatoslavMC July 29, 2019 at 09:29 AM

Almost Perfect Libraries by Electronic Arts

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

Our attention was recently attracted by the Electronic Arts repository on GitHub. It's tiny, and of the twenty-three projects available there, only a few C++ libraries seemed interesting: EASTL, EAStdC, EABase, EAThread, EATest, EAMain, and EAAssert. The projects themselves are tiny too (about 10 files each), so bugs were found only in the «largest» project of 20 files :D But we did find them, and they do look interesting! As I was writing this post, we were also having a lively discussion of EA games and the company's policy :D

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SvyatoslavMC July 26, 2019 at 07:35 PM

Best Copy-Paste Algorithms for C and C++. Haiku OS Cookbook

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

Numerous typos and Copy-Paste code became the main topic of the additional article about checking the Haiku code by the PVS-Studio analyzer. Yet this article mostly tells about errors related to thoughtlessness and failed refactoring, rather than to typos. The errors found demonstrate how strong the human factor is in software development.

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SvyatoslavMC July 25, 2019 at 09:09 AM

How to shoot yourself in the foot in C and C++. Haiku OS Cookbook

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

The story of how the PVS-Studio static analyzer and the Haiku OS code met goes back to the year 2015. It was an exciting experiment and useful experience for teams of both projects. Why the experiment? At that moment, we didn't have the analyzer for Linux and we wouldn't have it for another year and a half. Anyway, efforts of enthusiasts from our team have been rewarded: we got acquainted with Haiku developers and increased the code quality, widened our error base with rare bugs made by developers and refined the analyzer. Now you can check the Haiku code for errors easily and quickly.

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Getting Started with the PVS-Studio Static Analyzer for Visual C++

• PVS-Studio corporate blog,
• C++,
• Visual Studio,
• C

In this article, I'm going to tell you about PVS-Studio, an analyzer for C and C++ code, and show you how to use it in the Visual C++ environment. This guide is specifically intended for beginner users.

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