------- Comment #13 from mark at codesourcery dot com 2008-07-09 19:08 -------
Subject: Re: Simple std::bind use causes warnings with -Wextra
bangerth at dealii dot org wrote:
> ------- Comment #10 from bangerth at dealii dot org 2008-07-09 17:04 -------
> (In reply to comment #8)
>> I was also trying to raise the issue of whether we think the warning is
>> useful.
>> If it's not practical to avoid the warning in the library, then I wonder if
>> it's practical to avoid it other generic-programming code.
>
> I agree with this. As I mentioned in PR 30601, code like this
>
> template <typename T> class ArrayView {
> T& operator();
> T operator() const;
> };
>
> is quite common and I don't see a need to make it more complicated than
> necessary just for a warning.
Me neither. I think writing:
const int f();
or:
template <typename T>
const int f(T);
is probably worth warning about, but maybe we ought to just skip this
warning when instantiating a template function. In other words, warn at
the point of original declaration of the template if it is already
obviously meaningless at that point to add the cv-qualifier, but not
warn at instantiation.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36760
