[Bug sanitizer/69204] ThreadSanitizer: False positive on std::promise usage

[bugzil...@reto-schneider.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69204

--- Comment #2 from bugzil...@reto-schneider.ch ---
Created attachment 37286
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37286&action=edit
Minimal example