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If the regex itself is affected by user input, such as a web service permitting clients to provide a search pattern, then an attacker can inject a malicious regex to consume the server's resources. Therefore, in most cases, regular expression denial of service can be avoided by removing the possibility for the user to execute arbitrary patterns ...
The designers chose to address this problem with a four-step solution: 1) Introducing a compiler switch that indicates if Java 1.4 or later should be used, 2) Only marking assert as a keyword when compiling as Java 1.4 and later, 3) Defaulting to 1.3 to avoid rendering prior (non 1.4 aware code) invalid and 4) Issue warnings, if the keyword is ...
The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation. I/O devices are the pieces of hardware used by a human (or other system) to communicate with a computer. For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices.
Log4Shell (CVE-2021-44228) is a zero-day vulnerability reported in November 2021 in Log4j, a popular Java logging framework, involving arbitrary code execution. [2] [3] The vulnerability had existed unnoticed since 2013 and was privately disclosed to the Apache Software Foundation, of which Log4j is a project, by Chen Zhaojun of Alibaba Cloud's security team on 24 November 2021.
A static analysis tool used to detect a wide range of defects, identify suspicious code, enforce various coding standards (MISRA/AUTOSAR/etc), calculate and report complex metrics, and implement user-defined checks. PMD: 2023-2-25 (6.55.0) Yes; BSD-like — C, C++ Java, JSP JavaScript — — ColdFusion, PHP duplicate code detection (e.g.) [12 ...
Input strings are generated so that they extensively cover DFA transitions and paths. Data generation happens right after DFA construction and prior to any optimizations, but the lexer itself is fully optimized, so skeleton programs are capable of revealing any errors in optimizations and code generation.
It allows a user to import scanned music scores and export them to MusicXML format for use in other applications, e.g. music notation programs or page turning software for digital sheet music. Thanks to Tesseract it can also recognize text in scores. Audiveris is written in Java and published as free software.
Coco/R is a compiler generator that takes wirth syntax notation [1]: 6 [note 1] grammars of a source language and generates a scanner and a parser for that language. [1] The scanner works as a deterministic finite automaton. It supports Unicode characters in UTF-8 encoding and can be made case-sensitive or case-insensitive. It can also ...