[Bug c++/67727] [concepts] parameterized constraint not being checked for unused variables

[andrew.n.sutton at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67727

Andrew Sutton <andrew.n.sutton at gmail dot com> changed:

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--- Comment #1 from Andrew Sutton <andrew.n.sutton at gmail dot com> ---
Created attachment 46824
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46824&action=edit
Patch against concepts-cxx2a to add test (git format-patch format)

Apparently, this has been previously fixed in the concepts-cxx2a branch.
Providing a patch that adds a test for the PR.