[Bug c++/116281] Comma operator used in the middle operand of a conditional expression is incorrectly rejected in non static data member initializer

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116281

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
EDG also rejects it:
```
"<source>", line 3: error: expected an identifier
      int y=0?0,0:0;
                ^
```


Are you sure this is valid code and not a bug in clang?
Especially when 3 out of the 4 major front-ends reject it.