[Bug c/49754] Let gcc warn about all uninitialized variables

[giecrilj at stegny dot 2a.pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49754

--- Comment #2 from Christopher Yeleighton <giecrilj at stegny dot 2a.pl> 2011-07-15 09:35:42 UTC ---
(In reply to comment #1)
> (In reply to comment #0)
> > == Expected Results ==  
> > foo.c: In function ‘foo’:
> > foo.c:2:?: warning: ‘x’ is used uninitialized in this function
> 
> It should really warn if 'x.i' is used uninitialized, not 'x'

Since (x) is uninitialized, so is (x.i).  It is impossible to recognize the
problem when (x.i) is eventually accessed by a client of foo:

{
struct i x = foo (); 
printf ("%i", +x.i);
}