We continue checking Microsoft projects: analysis of PowerShell

It has become a “good tradition” for Microsoft to make their products open-source: CoreFX, .Net Compiler Platform (Roslyn), Code Contracts, MSBuild, and other projects. For us, the developers of PVS-Studio analyzer, it’s an opportunity to check well-known projects, tell people (including the project authors themselves) about the bugs we find, and additionally test our analyzer. Today we are going to talk about the errors found in another project by Microsoft, PowerShell.

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Flaws in Microsoft Code Contracts

We have successfully created and continue developing PVS-Studio analyzer for C/C++ languages. Over the time, it became clear that many of the diagnostics that we have implemented are not related to a specific programming language, so we decided to apply our experience to another programming language, namely C#. In this article, we are talking about the analysis of Code Contracts project by Microsoft done by our C# analyzer.

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Fun and Bugs in Microsoft Word 1.1a

The Microsoft company made a present to all programmers eager to dig into some interesting stuff: they opened the source codes of MS-DOS v 1.1, v 2.0 and Word for Windows 1.1a. The MS-DOS operating system is written in an assembler, so the analyzer cannot be applied to it. But Word is written in C. Word 1.1a’s source codes are almost 25 years old, but we still managed to analyze it. There’s no practical use of it, of course. Just for fun.

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do {…} while (0) in macros

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If you are a C programmer, you must be familiar with macros. They are powerful and can help you ease your work if used correctly. However, if you don’t define macros carefully, they may bite you and drive you crazy. In many C programs, you may see a special macro definition which may seem not so straightforward. Here is one example:

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One more tool is now free

Static code analyzers are tools that help programmers find bugs on the earliest stages of development.

We are happy to announce that now you can use PVS-Studio static code analyzer for free, for educational purposes, so that individual developers and enthusiastic teams could also fully use it. To find out how to use this tool for free – please read the following sections.

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C Programming Tips

C is one of the most important and widely used of all programming languages. It is a powerful language that can be used not only to build general-purpose applications but also to write “low-level” programs that interact very closely with the computer hardware.

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