Alan Kay said: “Simple things should be simple, complex things should be possible”. This sentence was the inspiration for the founder of RT-Thread to stick to his beliefs.
Background:
Stack overflow is a type of buffer overflow vulnerability. When we pour water in a glass more than its capacity the water spills or overflow, similarly when we enter data in a buffer more than its capacity the data overflows to adjacent memory location causing program to crash. This is know as buffer overflow.
wasm,opengl,cpp,c++,html
RT-Thread, an open-source embedded real-time operating system that has launched its development tool: RT-Thread Studio. RT-Thread Studio is built on Eclipse but has innovative interface interaction designs and it is deep customization of Eclipse, easy and simple to use, even new developers can easily get started.
RT-Thread Studio has the features of project creation and management, code editing, SDK management, RT-Thread configuration, build configuration, debugging configuration, program download and debug.
Welcome to other chapters of Let’s Understand Chrome V8
Bytecode is the output of the parse, which is an architecture-independent abstract machine code.
In this article, the breadth-first search algorithm is explained with examples and implementations, including how it can be modified to find the shortest paths.
Template parameter pack was introduced in C++11. Today we will utilise it to write our fold function. To the ones who don't know what a fold function the expression fold(add, 1, 2, 3, 4, 5) , we will output (1 +(2 + (3 + (4 + 5)))) = 15 (which is left fold). Similarly for fold(mul, 1, 2, 3, 4, 5) , we will output 120. More about it can be found here.
#include <bits/stdc++.h> is not a C++ standard header. Using it is bad coding practice. In this article the reasons why this header should be avoided are shared
Libraries and system utilities form the foundations on which larger projects are built. So it's critical to make sure they, in particular, are secure. That's why we recently introduced five new rules for C++ and C to detect broken authentication and access control in *nix systems. The new rules fall into three categories: account validity, granting permissions, and changing directories.
Starting from PVS-Studio 7.14, the C and C++ analyzer has been supporting intermodular analysis.
Late feedback is a pain in the butt. Regardless of how it comes, hearing "that thing you did two weeks ago was wrong" is unwelcome at best. Good feedback is immediate, actionable and at least dispassionate, if not compassionate.
In this article, we are going to discuss a step-by-step guide on how you can learn C++.
Do you need components when you're working on a real-time operating system? The components such as FinSH console, virtual file system, utest framework, dynamic module, socket abstraction layer, AT commands, POSIX interface, Ulog log, power management, or network framework. If you have these demands, this article may be of interest.
Inheritance is one of the most used method for code reuse. Object Oriented Languages strive on the inheritance to collect the common functionality in a base class.
We all are known to the “Bucket” tool of Microsoft Paint which is used to fill an area with single specific color. But do we know how it actually works? Well, Let’s discuss this.
In hamming distance problem, we find the number of positions where the bits are different for the given input with constant time complexity.
The answer to "What exactly nullptr is in C++?" would be a piece of cake for experienced C++ eyes & for those who are aware of Modern C++ i.e. keyword. But nullptr is more than just a keyword in C++ & to explain that, I have written this article. But before jump-into it, we will see issues with NULL & then we'll dive into the unsophisticated implementation of nullptr & some use-cases of nullptr.
Don't let C++ scare you!
Welcome to the first chapter of Let’s Understand Chrome V8.
We had a great talk with Bjarne Stroustrup, the designer and original implementer of C++.
Libraries and system utilities form the foundations on which larger projects are built. So it's critical to make sure they, in particular, are secure. That's why we recently introduced five new rules for C++ and C to detect broken authentication and access control in *nix systems. The new rules fall into three categories: account validity, granting permissions, and changing directories.
Author Robert Collier said that "Success is the sum of small efforts repeated day in and day out." That's especially true when it comes to security.
This post will show you how you can run an arbitrary piece of code in your nano VM. This post assumes that you already have a nano VM running (here). A full version of the program can also be found here (gitlab).
Security is an eternal race between the techniques and technologies of attackers and those of the defenders. Today, I'm proud to announce a step forward for defenders with a new rule to detect a literal race condition: TOCTOU (or TOCTTOU) vulnerabilities, known in long-form as Time Of Check (to) Time Of Use.
Prototype Design Pattern is a Creational Design Pattern that helps in the prototyping(creating/copying cheaply) of an object using separate methods or polymorphic classes. You can consider the prototype as a template of an object before the actual object is constructed. In this article of the Creational Design Patterns, we’re going to take a look at why we need a Prototype Design Pattern in C++ i.e. motivation, prototype factory & leveraging prototype design pattern to implement virtual copy constructor.
This is a 5 minutes tutorial how-to-use Oat++ (AKA oatpp) web framework to build your own C++ performant web-service and integrate it with Swagger-UI.
When writing a rule for static analysis, it’s possible that in some cases, the rule does not give the results that were expected. Unfortunately, naming a false positive is often far easier than fixing it. In this post, I’ll discuss how the different types of rules give rise to different types of false positives, which ones are easier to fix than others, and how you can help. I’ll end with insight into how issues that are false positives can still be true indicators that the code needs to change.
Dependency Inversion Principle in C++ is the fifth & last design principle of a series SOLID as a Rock design principles. The SOLID design principles focus on developing software that is easy to maintainable, reusable & extendable. In this article, we will see an example code with the flaw & correct it with help of DIP. We will also see guideline & benefits of DIP inclosure of the article.
This is the second part of a five-part series about SOLID as Rock design principle. The SOLID design principles, when combined together, make it easy for a programmer to craft software that is easy to maintain, reuse & extend. Open-Closed Principle(OCP) is the second principle in this series which I will discuss here with minimalistic example in Modern C++ along with its benefits & generic guideline.
Lambda function is quite an intuitive concept of Modern C++ introduced in C++11, So there are already tons of articles on lambda function tutorial over the internet. But still, there are some untold things(like IIFE, types of lambda, etc.) left, which nobody talks about. Therefore, here I am to not only show you lambda function in C++ but we'll also cover how it works internally & other aspects of Lambda.
By the end of this short guide, you’d be able to run, debug, and get IntelliSense for C/C++ files in VSCode
When you run any C-program, its executable image loaded into RAM of computer in an organized manner which known as process address space or memory layout of C program. Here I have tried to show you the same thing in two parts .
Summary: A crash course on the C++14 multi-threading constructs in a very non-verbose manner
From C++11, std::tuple is an incredible expansion to Modern C++, that offers a fixed-size collection of heterogeneous values. Unfortunately, tuples can be somewhat dubious to manage in a conventional fashion. But, subsequently released C++ standard introduced a few features & helpers that greatly reduce the necessary boilerplate. So, in this article, I will explain the variadic template in C++ with the help of unsophisticated tuple implementation. And also walks you through a tricky part of tuple i.e. loop through tuple element. In spite of the fact that I have shrouded the variadic template in my prior article i.e. C++ Template: A Quick UpToDate Look. So, my focus here would be a blend of variadic template & tuple implementation with more up to date C++ gauges.
In software engineering, Creational Design Patterns deal with object creation mechanisms, i.e. try to create objects in a manner suitable to the situation. The basic or ordinary form of object creation could result in design problems or added complexity to the design. In this article of the Creational Design Patterns, we’re going to take a look at the much-hated & commonly asked design pattern in a programming interview. That is Singleton Design Pattern in Modern C++ which criticizes for its extensibility & testability. I will also cover the Multiton Design Pattern which quite contrary to Singleton.
All data in computer is represented in binary i.e. in 0 or 1. Computers or machines do not understand our languages, they understand bits. Generally programmer do not care about operations at the bit level. But sometimes a programmer has to dive in a deeper level and work on bits.
After hitting a certain level of experience & spending quite enough time in the industry, I have realised the importance of designing/architecting system & software. So I have started looking into system/software design & got to know nothing can better start than a Design Pattern. And the first thing I have done is googling "What is Design Pattern?" Hence got the idea of this article.
This article is the first part of a five-part series about SOLID as Rock design principle series. The SOLID design principles focus on developing software that is easy to maintainable, reusable & extendable. In this article, we will see an example of the Single Responsibility Principle in C++ along with its benefits & generic guideline.
Top 10 Bugs Found in C++ Projects. Modulo division by one delete instead of delete[] Buffer overflow Meaningless overflow protection
I found the sign '++ and — — ' in C++ confusing for many beginners, So let’s explain what’s actually they mean,
The typecasting is the feature which makes C++ more type-safe, robust & may convince you to use it over C. But this is also a more underrated topic when you are a newbie or moving from C background. Hence, I come up with an article on it. Here, we will not only see the C++ type casting with example for C developers but we will also cover Why do we need typecasting? & C++ type casting cheat codes for C developers to remember & employ it easily.
In software engineering, Creational Design Patterns deal with object creation mechanisms, i.e. try to create objects in a manner suitable to the situation. In addition to this basic or ordinary form of object creation could result in design problems or added complexity to the design.
In an earlier article, we have seen C runtime: before starting main & How C program stored in RAM memory. Here we will see "How C program converts into the assembly?" and different aspect of its working at the machine level.
In software engineering, Creational Design Patterns deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. The basic or ordinary form of object creation could result in design problems or added complexity to the design. Builder Design Pattern in C++ solves this specific problem by separating the construction of a complex object from its representation.
Interface Segregation Principle in C++ is the fourth & by far the simplest design principle of a series SOLID as a Rock design principles. The SOLID design principles focus on developing software that is easy to maintainable, reusable & extendable. In this article, we will see a code violating ISP, a solution to the same code, guideline & benefits of ISP.
Another year is drawing to an end, and it's a perfect time to make yourself a cup of coffee and reread the reviews of bugs collected across open-source projects over this year. This would take quite a while, of course, so we prepared this article to make it easier for you. Today we'll be recalling the most interesting dark spots that we came across in open-source C/C++ projects in 2019.
The American company Electronic Arts Inc (EA) has made the source code of the games Command & Conquer: Tiberian Dawn and Command & Conquer: Red Alert publicly available. This code should help the game community to develop mods and maps, create custom units, and customize the gameplay logic. We all now have a unique opportunity to plunge into the history of development, which is very different from the modern one.
Exception handling in C++ is a well-unschooled topic if you observe initial stages of the learning curve. There are numerous tutorials available online on exception handling in C++ with example. But few explains what you should not do & intricacies around it. So here, we will see some intricacies, from where & why you should not throw an exception along with some newer features introduced in Modern C++ on exception handling with example. I am not an expert but this is what I have gained from various sources, courses & industry experiences.
C was developed and promoted by Dennis Ritchie in the years between 1969 and 1973 at AT&T Bell Labs. C++ came into existence around 1979 by Bjarne Stroustrup. C++ was created as an enrichment to the C programming language, and initially, it was named "C with Classes."
Some of you may have been tired of this topic already, but our software engineers picked 7 examples and tried to explain their behavior using the Standard (the latest draft at the time of writing):
The American company Electronic Arts Inc (EA) has opened the source code of the games Command & Conquer: Tiberian Dawn and Command & Conquer: Red Alert publicly available. Several dozen errors were detected in the source code using the PVS-Studio analyzer, so, please, welcome the continuation of found defects review.
So I have started updating myself with Modern C++ a while ago & since my post 21 new features of Modern C++ to use in your project & All about lambda function in C++ was popular I decided to write about advanced C++ concepts & idioms which I have learned from this wikibook & course.
Just before the release of the "Amnesia: Rebirth" game, the vendor "Fractional Games" opened the source code of the legendary "Amnesia: The Dark Descent" and its sequel "Amnesia: A Machine For Pigs". Why not use the static analysis tool to see what dreadful mistakes are hidden in the inside of these cult horror games?
Machine learning has firmly entrenched in a variety of human fields, from speech recognition to medical diagnosing. The popularity of this approach is so great that people try to use it wherever they can. Some attempts to replace classical approaches with neural networks turn up unsuccessful. This time we'll consider machine learning in terms of creating effective static code analyzers for finding bugs and potential vulnerabilities.
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