Compile fails with -fconcepts -std=gnu++14

[Peter Krefting]

$ cat /tmp/try.cc
#include <vector>

int main()
{
    return 0;
}
$ g++ -fconcepts -std=gnu++14 -o try try.cc
In file included from /usr/include/c++/13/vector:67,
                 from try.cc:1:
/usr/include/c++/13/bits/stl_bvector.h:597:18: error: ‘is_default_constructible_v’ was not declared in this scope; did you mean ‘is_default_constructible’?
  597 | requires is_default_constructible_v<_Bit_alloc_type>
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
      | is_default_constructible
/usr/include/c++/13/bits/stl_bvector.h:597:9: error: expression must be enclosed in parentheses
  597 | requires is_default_constructible_v<_Bit_alloc_type>
      | ^~~~~~~~
/usr/include/c++/13/bits/stl_bvector.h:597:9: error: expected ‘;’ at end of member declaration
  597 | requires is_default_constructible_v<_Bit_alloc_type>
      | ^~~~~~~~
      | ;
/usr/include/c++/13/bits/stl_bvector.h:597:18: error: ‘is_default_constructible_v’ does not name a type; did you mean ‘is_default_constructible’?
  597 | requires is_default_constructible_v<_Bit_alloc_type>
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
      | is_default_constructible

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: g++ 4:13.2.0-7ubuntu1
ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
Uname: Linux 6.8.0-22-generic x86_64
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CloudArchitecture: x86_64
CloudID: none
CloudName: none
CloudPlatform: none
CloudSubPlatform: config
Date: Tue Apr 16 12:32:20 2024
InstallationDate: Installed on 2024-01-03 (104 days ago)
InstallationMedia: Ubuntu-Server 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230810)
SourcePackage: gcc-defaults
UpgradeStatus: Upgraded to noble on 2024-04-12 (4 days ago)