34e9407b3b
This adds a non-standard extension to support initializing a std::jthread with a pointer to a member function that expects a stop_token to be added to the arguments. That use case is not supported by C++20, because the stop_token would get added as the first argument, which is where the object argument needs to be to invoke a pointer to member function. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: PR libstdc++/100612 * include/std/thread (__pmf_expects_stop_token): New variable template to detect a pointer to member function that needs a stop_token to be added to the arguments. (jthread::__S_create): Use __pmf_expects_stop_token. (jthread::__S_create_pmf): New function. * testsuite/30_threads/jthread/100612.cc: New test. |
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