[Bug c/89132] missing -Wcast-align casting the address of a function to a more aligned pointer type

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89132

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
      Known to fail|                            |9.0

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Clang diagnoses both problems with just -Wcast-align (and apparently always
has):

u.c:2:16: warning: cast from 'int *' to 'long long *' increases required
alignment from 4 to 8 [-Wcast-align]
long long *p = (long long*)&i;   // -Wcast-align (good)
               ^~~~~~~~~~~~~~
u.c:5:16: warning: cast from 'void (*)(void)' to 'long long *' increases
required alignment from 4 to 8 [-Wcast-align]
long long *q = (long long*)f;   // missing -Wcast-align
               ^~~~~~~~~~~~~
2 warnings generated.