[Bug analyzer/106441] Analyzer has some issues with nested functions extension to C

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106441

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
__analyzer_callee_test_3 (int a, int b, int (**out_fn) (int))
{
  int square (int z) { return z * z; }

  *out_fn = square;

This really should be warning that the assignment of the nested function is
escaping the current scope because the chain value goes out of the scope at the
end.