ISO/IEC 14882:2024

Overview

ISO/IEC 14882:2024 - Programming languages - C++ is the seventh edition of the international standard that defines the C++ language and specifies requirements for C++ implementations. The standard requires compilers and standard library implementations to conform to the language definition and documents the syntax, semantics, runtime behavior and library facilities that constitute modern C++ (C++2024). It builds on and interoperates with the C standard ISO/IEC 9899:2018.

Key topics and technical requirements

The standard is organized to cover both language and library aspects. Major technical topics include:

• Language core and syntax

  • Lexical conventions, tokens, character sets, and translation phases
  • Declarations, definitions, scope, name lookup and the one-definition rule
  • Types, objects, memory model and program execution requirements

• Language features

  • Classes, unions, member access, initialization and comparisons
  • Templates (parameters, instantiation, specialization, constraints)
  • Overloading (functions and operators) and overload resolution
  • Modules (import/export, reachability) and preprocessing directives
  • Exception handling, constructors/destructors and exception specifications
  • Coroutines and modern control-flow facilities

• Expressions, statements and semantics

  • Conversion rules, evaluation order, constant expressions and statements

• Standard library

  • Language support (startup/termination, dynamic memory, type identification)
  • Libraries for memory management (smart pointers, memory resources)
  • Containers, strings, algorithms, formatting, bit manipulation
  • Concepts, diagnostics, metaprogramming, utilities, execution policies

• Implementation compliance

  • Conformance clauses, normative references and implementation properties that compiler and library vendors must satisfy

Practical applications and users

Who benefits from and uses ISO/IEC 14882:2024:

• Compiler and standard library implementers - to build conforming C++ compilers, toolchains and runtime libraries.
• Software engineers and architects - to ensure portable, standards-compliant code across platforms.
• Tool and static analysis vendors - to align diagnostics, lints and code-transformation tools with official language rules.
• Educators and authors - as a definitive reference for teaching modern C++ semantics.
• Safety-, security- and certification-focused projects - to demonstrate compliance and predictable runtime behavior.

Practical uses include writing portable libraries, implementing language features (modules, concepts, coroutines, templates), defining ABI and runtime guarantees, and ensuring consistent behavior across platforms.

Related standards

• ISO/IEC 9899:2018 - Programming languages - C, referenced for interoperability with C.
• Other ISO/IEC standards and normative references cited within ISO/IEC 14882:2024 for implementation and library behavior.

Keywords: ISO/IEC 14882:2024, C++ standard, C++2024, C++ language, standard library, templates, modules, concepts, compiler conformance.