[Bug middle-end/54066] [4.6] wrong-code at -O0

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54066

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-07-22 19:11:42 UTC ---
>        Lf->Achit += Lf->uint8();

Both the left side and the right side uses Lf->Achit .

The above code is equivalent to:
Lf->Achit = Lf->uint8() + Lf->Achit;

Now the question comes which comes first, the access of Lf->Achit or the
function call Lf->uint8().  The answer is it is (explicitly) unspecified by the
C++ standard.

So the answer is either.