This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of NAD status.

### 1486. Value of `this_thread::get_id()` underspecified for detached thread

Section: 33.4.5 [thread.thread.this] Status: NAD Submitter: Switzerland Opened: 2010-08-25 Last modified: 2016-01-28

Priority: Not Prioritized

View all other issues in [thread.thread.this].

View all issues with NAD status.

Discussion:

Addresses CH-24

What would be the value `this_thread::get_id()` when called from a detached thread?

[ Resolution proposed by ballot comment: ]

Add some text to clarify that `get_id()` still returns the same value even after detaching.

[ 2010-11-22 Howard Hinnant observes ]

33.4.5 [thread.thread.this]/1 contains the following sentence describing `this_thread::get_id()`:

> ... No other thread of execution shall have this id and this thread of execution shall always have this id.

I don't object to adding "even if detached" to this sentence, but it seems unnecessary to me. "Always" means always.

[2011-02-11 Reflector discussion]

Moved to Tentatively NAD after 5 votes.

Proposed resolution: