32 Concurrency support library [thread]

32.4 Threads [thread.threads]

32.4.3 Class thread [thread.thread.class]

32.4.3.2 Thread attributes [thread.attributes]

32.4.3.2.1 General [thread.attributes.general]

Thread attributes can be used to define additional implementation-defined behaviors on a thread or jthread object.
The set of thread attribute types contains thread​::​name_hint, thread​::​stack_size_hint, and an implementation-defined set of additional thread-attributes.
When an object of a thread attribute type is passed to a thread or jthread constructor, it may affect the new thread's behavior.