[Bug c/112702] New: C23, C++23: Extended characters not valid in an identifier with -pedantic

[stammark at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112702

            Bug ID: 112702
           Summary: C23, C++23: Extended characters not valid in an
                    identifier with -pedantic
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: stammark at gcc dot gnu.org
  Target Milestone: ---

Hi all,

This is likely a symptom of the WIP-ness of C23 and C++23 support in the
frontends, but see here:

https://godbolt.org/z/78KeK1fnG

The use of extended characters in identifiers with -pedantic stopped working

* For C, in GCC13
* For C++ in GCC12

Removing -pedantic makes the compilation succeed.

Is this expected behaviour with -pedantic or a bug?

Thanks,