Re: [[patch] valarray (was Re: valarray_copy implementation question)

[Christian BRUEL <christian dot bruel at st dot com>]

what about

#include <valarray>
using namespace std;

int main(void)
{
  int n = 1;

  valarray<int>  dest(n);
  valarray<bool> b(false, n);
  valarray<int>  src(1, n);

  dest[b] = src;

  return 0;
}

is it a user error also ?

thanks

Christian

Gabriel Dos Reis wrote:
> On Thu, Nov 26, 2009 at 5:42 AM, Christian BRUEL <christian.bruel@st.com> wrote:
> > > This disposition makes your example above have an undefined behaviour.
> > this : myarray[mymask] += valarray<int>(3,n);
> >
> > is undefined ???
> > with
> > myarray = size 10
> > valrarray = size 10
> > mymask = size 10, 2 true bits.
>
> Yes.
>
> > oh well...
> >
> > I've recorded the original bug
> > at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42182
>
> It should be closed as 'user error'.
>
> -- Gaby