[Bug c/99291] New: maybe_warn_pass_by_reference uses outdated format string

[roland.illig at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99291

            Bug ID: 99291
           Summary: maybe_warn_pass_by_reference uses outdated format
                    string
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roland.illig at gmx dot de
  Target Milestone: ---

tree-ssa-uninit.c says:
> inform (loc, "in a call to %qD declared with "
>         "attribute %<%s%> here", fndecl, access_str);

This format string uses the sequence %<%s%>, for which there is the shortcut
%qs.

Using the %<%s%> should be detected and prevented by check_plain in c-format.c.

Is that check not active by default?