Описание тега freestanding

The C++ standard defines hosted and freestanding implementations as follows (§1.4/7)

Two kinds of implementations are defined: a hosted implementation and a freestanding implementation. For a hosted implementation, this International Standard defines the set of available libraries. A freestanding implementation is one in which execution may take place without the benefit of an operating system, and has an implementation-defined set of libraries that includes certain language-support libraries (§17.6.1.3).

Use this tag to mark C++ questions where this constraints may apply. Also make sure the question explicitly states which libraries are and are not available (besides the minimal language support headers that are required).

References:

• https://en.cppreference.com/w/cpp/freestanding
• https://wiki.osdev.org/C_Library