[Bug c/109479] New: [RISC-V] Build with rv64gc_zve32x_zvl64b should fail but actually not

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109479

            Bug ID: 109479
           Summary: [RISC-V] Build with rv64gc_zve32x_zvl64b should fail
                    but actually not
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pan2.li at intel dot com
  Target Milestone: ---

When compiling with option '-march=rv64gc_zve32x_zvl64b', it should report an
error similar to clang, you can see this case in below link.

https://godbolt.org/z/qn1bcK7Pn