[Bug c/19972] -Wreturn-local-addr misses return of local (nested) function pointer

["egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19972

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2005-12-18 01:39:05         |2017-7-24
                 CC|                            |egallager at gcc dot gnu.org
            Summary|Return Local (nested)       |-Wreturn-local-addr misses
                   |function pointer            |return of local (nested)
                   |                            |function pointer

--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Patrick Pelissier from comment #0)
> When returning local function pointer, it doesn't produce any warnings.
> For example:
> 
> int *h() {
>   int z;
>   return &z;
> }
> 
> int (*apply (int (*f) (const void *, const void *), void *a))(const void *)
> {
>   int zozo(const void * b) { return f(a,b); };
>   return &zozo;
> }
> 
> Compile with -O2 -Wall, it produces a warning for h:
> 
> ttt.c: In function 'h':
> ttt.c:17: warning: function returns address of local variable
> 

With a newer gcc, this warning is now:

$ /usr/local/bin/gcc -c -O2 -Wall 19972.c
19972.c: In function ‘h’:
19972.c:3:9: warning: function returns address of local variable
[-Wreturn-local-addr]
  return &z;
         ^~

Retitling this bug to better describe situation.