[Bug c++/80363] New: #'vec_cond_expr' not supported by dump_expr#<expression error>

["jwjagersma at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80363

            Bug ID: 80363
           Summary: #'vec_cond_expr' not supported by
                    dump_expr#<expression error>
           Product: gcc
           Version: 6.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jwjagersma at gmail dot com
  Target Milestone: ---

Created attachment 41157
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41157&action=edit
test case

Not sure if this is valid code, see attached source file. (I was kinda hoping
std::max would use the maxps sse instruction. that was a wild guess...)
In any case, the error message here seems wrong:

$ g++ vectest.cpp
In file included from D:/msys64/mingw64/include/c++/6.3.0/algorithm:61:0,
                 from vectest.cpp:1:
D:/msys64/mingw64/include/c++/6.3.0/bits/stl_algobase.h: In instantiation of
'constexpr const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = __vector(4)
float]':
vectest.cpp:16:22:   required from here
D:/msys64/mingw64/include/c++/6.3.0/bits/stl_algobase.h:224:7: error: could not
convert '#'vec_cond_expr' not supported by dump_expr#<expression error>' from
'__vector(4) int' to 'bool'
       if (__a < __b)
       ^~