[cfe-dev] [libc++] possible bug?

[Marc Glisse]

On Sun, 22 Apr 2012, Ovanes Markaryan wrote:

> Hello *,
> just tried to compile SYMPHONY-5.4.4 with clang 3.0 + libc++ (tag 31). While
> compiling it I receive this error:
> 
> include/c++/v1/algorithm:643:97: error: invalid operands to binary
> expression
>       ('const reducedCost' and 'const reducedCost')
>     _LIBCPP_INLINE_VISIBILITY bool operator()(const _T1& __x, const _T1&
> __y) const {return __x < __y;}

[...]

>     bool operator<(const reducedCost & other)

Missing const here. It is often preferable to avoid making operators 
member functions when you can avoid it.

>     {
>         return (value>other.value);
>     }

-- 
Marc Glisse