https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106793
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Indeed, you need to use barrier<>
You can clearly see the default template argument is present:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libstdc%2B%2B-v3/include/std/barrier;h=2a2650546add5cce7b2af2c294672eaa3c03fc7e;hb=HEAD#l203
