Hi
Following Marc Glisse comment #4
on:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65641 I would like to
propose this enhancement to the hash functor for pointers. It simply
gets rid of the irrelevant bits on pointers hash code based on memory
alignment of the pointed type. The only draw
On Wed, May 6, 2015 at 10:10 PM, François Dumont wrote:
> Hi
>
> Following Marc Glisse comment #4
> on:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65641 I would like to
> propose this enhancement to the hash functor for pointers. It simply gets
> rid of the irrelevant bits on pointers hash co
On 08/05/2015 10:02, Richard Biener wrote:
On Wed, May 6, 2015 at 10:10 PM, François Dumont wrote:
Hi
Following Marc Glisse comment #4
on:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65641 I would like to
propose this enhancement to the hash functor for pointers. It simply gets
rid of the
My concern with accepting this patch is that many of libstdc++'s hash
functions are awful from a mixing point of view -- you would get
exactly the same problem from users who have integers which are always
a multiple of a power of 2 (which is in practice not uncommon). This
would give exactly the s
My proposal should be consider out of any context. We don't know
what std::hash is used for in user code, this is why I am proposing this
patch even if for the moment it doesn't make any difference considering
only our usage of it.
Your remark would make more sens if we were talking ab
