[Bug c/89035] Request - builtins for unspecified and arbitrary values

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89035

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
We already have

  int x = x;

for one of those, no? Or just

  int x;

but it tends to warn.