[Bug libstdc++/57060] std::this_thread::get_id() == std::thread::id::id() without -pthread

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57060

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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   Target Milestone|5.4                         |6.0