In the New year 2019, a PVS-Studio team decided to make a nice gift for all contributors of open-source projects hosted on GitHub or Bitbucket. They are given free usage of PVS-Studio static analyzer for development of open source projects.
opensource
Android Operating System: One Potential Vulnerability per 4000 Lines of C++ Code
For many years, Andrey Karpov has been publishing articles on code quality, and bugs reviews of open source projects. For example, he is the author of such publications as “The Ultimate Question of Programming, Refactoring, and Everything” and “27 000 Errors in the Tizen Operating System“.
Recently, the open source Android operating system has become of interest for him. He researched that part of the operating system code, which is written in the C and C++ languages. After that he came to a conclusion, which always takes place after such research: human error is always possible. By using the PVS-Studio tool, it becomes possible to detect at least one security defect (potential vulnerability) per 4000 lines of code.
Static Analysis in Video Game Development: Top 10 Software Bugs
If you are a software developer working in the video game industry and wondering what else you could do to improve the quality of your product or make the development process easier and you don’t use static analysis – it’s just the right time to start doing so. You doubt that? OK, I’ll try to convince you. And if you are just looking to see what coding mistakes are common with video-game and game-engine developers, then you’re, again, at the right place: I have picked the most interesting ones for you.
Researcher Claims Samsung’s Tizen OS is Poorly Programmed; Contains 27,000 Bugs!
A researcher has claimed that Samsung’s Tizen operating system that runs on millions of Samsung products is so poorly programmed that it could contain nearly 27,000 programming errors, which could also lead to thousands of vulnerabilities.
Tizen is a Linux-based open-source operating system backed by Intel and Samsung Electronics, which has been in development since early 2012 and designed for smartphones, tablets, smart TVs, smart watches, cameras and PCs.
Top 10 bugs in C++ open source projects, checked in 2016
While the world is discussing the 89th Ceremony of Oscar award and charts of actors and costumes, we’ve decided to write a review article about the IT-sphere. The article is going to cover the most interesting bugs, made in open source projects in 2016. This year was remarkable for our tool, as PVS-Studio has become available on Linux OS. The errors we present are hopefully, already fixed, but every reader can see how serious are the errors made by developers.
Top 10 C# projects errors found in 2016
To measure the efficiency of our analyzer, and also to promote the methodology of static analysis, we regularly analyze open source projects for bugs and write articles about the results. 2016 was no exception. This year is especially important as it is the year of the “growth” of the C# analyzer. PVS-Studio has obtained a large number of new C# diagnostics, an improved virtual values mechanism (symbolic execution) and much more. Based on the results of our teamwork, I compiled a kind of chart of the most interesting bugs, found in various C# projects in 2016.
How to capture a variable in C# and not to shoot yourself in the foot
Back in 2005, with the release of C# 2.0 standard we got a possibility to pass a variable to the body of an anonymous delegate by capturing it from the current context. In 2008 the C# 3.0 brought us lambdas, user anonymous classes, LINQ requests and much more. Now it January, 2017 and the majority of C# developers are looking forward to the release of the C# 7.0 standard that should provide us a bunch of new useful features. However, there are still old features that need to be fixed. That’s why there are plenty of ways to shoot yourself in the foot. Today we are going to speak about one of them, and it is related with quite an unobvious mechanism of variable capture in the body of anonymous functions in C#.
The First Bug on Mars
In 1971, the USSR delivered the first planetary rovers on skis to Mars, whose task was to puncture the surface with a rod (housing a dynamic penetrometer and a radiation densitometer) to see if Mars was solid or liquid dusty. The first probe crashed on November 27; the second soft-landed on December 2 but didn’t manage to get out of the “shell” of the lander, so that attempt didn’t count.
Functional Programming in C#
C++ versus C
Originally C++ was envisioned as a superset of C: the majority of existing C programs should also be valid C++ programs. The standards have since diverged substantially, but even in the old days there were obscure exceptions:
