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ProgrammingDEV Community ·

Two Rust Borrow Checker Bugs Allow Unsafe Code to Compile

Two long-standing bugs in Rust's borrow checker, dating to 2013 and 2014, can allow code violating aliasing rules to compile. One bug involves raw pointers derived from mutable references, where the checker loses track of the original borrow. The other bug occurs in closure capture analysis, failing to detect conflicts between captured mutable and shared references. These gaps can let undefined behavior slip into production code without explicit unsafe blocks. The issues stem from limitations in the compiler's intermediate representation analysis.

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ProgrammingDEV Community ·

SQL's DDL and DML: Core languages for database structure and data

SQL uses two core command groups for database management. Data Definition Language (DDL) is used to create, alter, or remove database structures like tables. Data Manipulation Language (DML) is used to insert, update, or delete the records stored within those structures. Understanding their distinct purposes is fundamental to effective database work and query writing.

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ProgrammingDEV Community ·

Developer launches open-source RumahTools web utility platform

A software developer has launched an open-source web utility platform named RumahTools. The platform addresses common digital tasks like PDF merging, image compression, and geotagging. It was created to offer a lightweight, privacy-focused alternative to ad-heavy online converters. RumahTools is built with Node.js, Express, and EJS, and its code is publicly available on GitHub.

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ProgrammingDEV Community ·

Essential Wapiti commands for security scanning explained

The DEV Community published a guide detailing practical commands for the open-source Wapiti vulnerability scanner. The article explains that Wapiti performs black-box scans on deployed web applications to detect flaws like SQL injection and cross-site scripting. It covers essential commands for tasks such as specifying target URLs, selecting specific attack modules, and managing authentication. The guide also includes commands for controlling scan scope with features like URL exclusions and crawl depth limits, aiming to help security professionals use the tool more effectively.

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ProgrammingDEV Community ·

AWS Retiring Advanced Networking Specialty Exam in 2026

AWS will retire its Advanced Networking Specialty certification exam, ANS-C01, on December 31, 2026. After this date, no new certifications for this specialty will be issued. Individuals who pass the exam before the deadline will maintain an active certification for a standard three-year period. However, recertification will not be possible once the exam is retired, as AWS has not announced a direct successor. The credential remains valid for proving AWS networking expertise for those who earn it before the cutoff.

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ProgrammingHacker News ·

Android developers resort to reverse engineering due to delayed AOSP source releases

Android developers are disassembling libraries to identify and report bugs because official AOSP source code releases are consistently delayed. This issue was reported on the Android NDK GitHub repository and discussed on Hacker News. The practice occurs because developers cannot access the latest source code needed for debugging and development. This workaround allows them to proceed with their work despite the official delays.

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ProgrammingHacker News ·

Blog post critiques excessive length of rationalist community articles.

An article published on Alex Wennerberg's blog on October 13, 2026, asks why posts on rationalist blogs are consistently very long. It examines this trend within the online rationalist community. The article sparked discussion on Hacker News, garnering 16 points and 15 comments. The post questions the necessity and impact of such extensive writing in this specific intellectual sphere.

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ProgrammingDEV Community ·

Python mutable default arguments cause unexpected shared state, experts warn

Using mutable objects like lists as default arguments in Python functions is a common source of bugs. The default value is created only once when the function is defined, not each time the function is called. This means subsequent calls that omit the argument will inadvertently modify and reuse the same list. Experts recommend using None as a default value and creating the mutable object inside the function to avoid this issue.

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ProgrammingDEV Community ·

Compound V3 Upgrade Review Finds Four Critical Security Vulnerabilities

A security review of the upcoming Compound V3 upgrade on Ethereum and other blockchains was published on October 14, 2026. The review, conducted by a senior DeFi security researcher, assessed the technical compatibility and security risks of the new version. It identified nine distinct attack vectors, with four rated as critical. These critical flaws could potentially lead to fund loss or market manipulation. The overall upgrade compatibility was given a risk score of 6.8 out of 10.

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ProgrammingHacker News ·

Anthropic warns of hypothetical AI risk, drawing criticism for stoking fears

Artificial intelligence company Anthropic has issued a new warning about a potential future AI threat. The warning, reported by The Register, focuses on a risk scenario that does not currently exist. Critics argue that this move unnecessarily stokes public fear of an AI apocalypse. The warning has been discussed on the Hacker News forum, where it received mixed reactions.

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ProgrammingDEV Community ·

TryHackMe user completes 50th virtual machine, shares key learning strategies

A cybersecurity enthusiast has completed their 50th virtual machine on the TryHackMe training platform. They emphasized the importance of methodical scanning, detailed note-taking, and thorough investigation during exercises. The user noted a significant shift in their approach, moving from basic network scans to analyzing full network architectures and Active Directory environments. They highlighted that understanding configuration flaws is often more critical than simply executing exploits. This milestone was achieved with the help of community-created training modules and shared guides.

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ProgrammingDEV Community ·

Key machine parameters to monitor for industrial production efficiency

Monitoring specific parameters is essential for maintaining consistent quality and performance in industrial roll-to-roll processing operations. Material tension must be carefully controlled according to material type and machine settings to prevent defects like wrinkles or loose winding. Slitting quality directly affects material dimensions and requires regular inspection of blades and alignment. Rewinding performance and operating speed must be balanced with material characteristics to avoid increased waste or downtime. Systematic tracking of these factors helps production teams plan maintenance and improve operational decisions.

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ProgrammingDEV Community ·

Guide to adding Pay by Bank to UK WooCommerce stores highlights webhook setup

A developer outlines the process for integrating Pay by Bank payments into WooCommerce stores in the UK, emphasizing the importance of webhook configuration. The setup uses the Atoa payment gateway plugin and typically takes about ten minutes, with additional time required for webhook settings. The payment method redirects customers to their banking app for approval, which can add an extra step compared to services like Apple Pay. The article notes bank payments cost roughly half of card transactions and lack a chargeback mechanism. Proper webhook signing key configuration is critical to prevent orders from remaining stuck in a 'Pending payment' status.

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ProgrammingDEV Community ·

Troubleshooting Laravel Database Connection Refused Error

A Laravel application can fail with a SQLSTATE[HY000] [2002] connection error when PHP cannot establish a network connection to the MySQL database server. This indicates a problem with the server's availability, network path, or credentials, not with the application's SQL queries or migrations. The article outlines a diagnostic approach, starting with checking if the database service is running and accessible on the correct port and host. It highlights common causes such as the database server not being started or a mismatch between using localhost (Unix socket) versus 127.0.0.1 (TCP) for the connection.

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ProgrammingDEV Community ·

Research proposes study into why AI voices falter in Urdu-English code-switched ads

A researcher in Lahore has proposed a study on AI voice synthesis for Urdu-English advertising, set for 2026. Current AI voices fail at the precise points in ads where languages switch, losing persuasive prosody. The research aims to analyze the specific acoustic patterns at these switch points, which existing systems do not address. It will create the first annotated corpus of Pakistani code-switched ads to measure the gap between human and synthetic speech. The goal is to develop a voice synthesis system that preserves the persuasive impact crucial for advertisers.

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ProgrammingDEV Community ·

B-Draft trains language model from scratch using inference-only NPU chips

South Korean company B-Draft has successfully pre-trained a small language model from scratch using only inference-dedicated NPU chips, a feat previously considered structurally impossible. The resulting model, named VKORE-46M-NPU, has been released publicly on Hugging Face. The training, conducted on 32 first-generation chips, produced a loss trajectory with a 0.99 correlation coefficient to an identical model trained on a GPU under the same conditions. This breakthrough suggests NPUs could be used for affordable, on-premises AI training, reducing dependency on expensive, high-power GPU servers.

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ProgrammingDEV Community ·

VIDRAFT trains language model from scratch on inference-only NPU chip

VIDRAFT has successfully pretrained a small language model entirely on an inference-only NPU chip, challenging the industry assumption that such chips cannot perform backpropagation. The resulting VKORE-46M-NPU model was trained under identical conditions on both the NPU and a GPU, with the two loss trajectories showing a 0.99 correlation. This demonstrates that the NPU performed numerically equivalent training work despite lacking the hardware paths typically considered essential. The model and its weights have been published on Hugging Face, while the proprietary core training technique remains private for IP protection.

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ProgrammingDEV Community ·

Undertale's Solo Developer Chose GameMaker Studio, Selling 5+ Million Copies

Solo developer Toby Fox created the 2015 role-playing game Undertale using GameMaker Studio and its GameMaker Language. The game, released for Windows and OS X in September 2015, sold at least five million copies. Fox, a self-taught programmer, chose the beginner-friendly 2D engine for its efficiency as he worked alone on the game. Its development was funded by a successful 2013 Kickstarter campaign. The engine fit the project's scope, allowing Fox to focus on its unique, dialogue-heavy, nonviolent combat system.

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ProgrammingDEV Community ·

Developer Documents Challenges of Mapping Wingdings Symbols to Unicode

A developer undertook a project to map all glyphs from the four Wingdings symbol fonts to Unicode code points to preserve text without the font. They discovered that most of the approximately 700 glyphs have no Unicode equivalent, forcing difficult choices like using the Private Use Area. The decoding process revealed technical complexities, including issues with astral-plane characters and mapping collisions where multiple letters produce the same symbol. The work was completed due to its relevance for interpreting content like the Wingdings-based text in the game Undertale.

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ProgrammingDEV Community ·

On-chain audit reveals 0.002 BNB discrepancy due to missing gas grant in treasury receipt

A treasury's buyback receipt showed a perfect balance, but an on-chain audit revealed a 0.002 BNB discrepancy between two consecutive transactions. The difference was a gas grant sent to an escrow wallet, which the receipt builder had failed to record. The team confirmed the error and fixed the reporting tool. The incident highlights the importance of mechanical, reproducible checks that anyone with a node can perform. The audit process emphasized verifying raw data, avoiding assumptions about decimals, and requiring specific evidence for all on-chain claims.

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