f/sta.c:340: warning: dereferencing type-punned pointer will break strict-aliasing rules

[Gabriel Dos Reis]

Mark Mitchell <mark@codesourcery.com> writes:

| --On Saturday, November 23, 2002 05:26:28 PM +0100 Toon Moene
| <toon@moene.indiv.nluug.nl> wrote:
| 
| > L.S.,
| >
| > Could someone, with larger knowledge of C, ook into this warning and see
| > if it is reasonable ?
| 
| I think it's a false positive warning, but I think most of the aliasing
| warnings are going to have high false positive rates.  (Which is why I'm
| not a big fan of those warnings...)
| 
| The compiler's complaining because the code is casting
| 
|   struct _ffesta_possible_root_ *
| 
| to a:
| 
|   struct _ffesta_possible_ *
| 
| In this case, the warning is particularly silly because the latter is
| the prefix portion of the former.

Right, the warning is really silly in that case.  Maybe the
type-punning detection machinery should be mabe aware of that rule..
But as you I'm not a big fan of that warning in the first place so it
will probably end up with low priority in my bucket.

-- Gaby