Re: undefined compound chaining behavior

[John W. Eaton]

On 06/12/2014 11:48 AM, Hossein Sajjadi wrote:
> > This discussion is moot, since the C++ compiler is never evaluating
> > such an expression in our C++ sources, or we would have seen such a
> > warning by now. If you can compile Octave and show us a warning such
> > as the one clang produces,
> >
> >      warning: unsequenced modification and access to 'x'
> >
> > then we do have UB.
> >
> > - Jordi G. H.
> I talk about Standard and do not target any compiler.
> In c++11 the expression i=++i+1 is well defined but gcc 4.9 throws
> warning and a+=a+=4 is undefined but gcc throws no warning

Unless I'm mistaken, there aren't any expressions like that in the C++ 
code in Octave.  If I'm mistaken, please point out where there are 
expressions like that.

jwe