Deleting items from std::list

Hi,

There seems to be some functionality missing from the STL.

I am iterating through a linked list (std::list) using a reverse
iterator and attempting to erase certain items from the list. It is
important that I iterate through the list backwards, because the items
in it have to be processed in reverse order before erasing. However,
there does not appear to be an std::list::erase() method defined for
reverse iterators.

I am using STLport 4.5 with Borland C++ Builder 6.

The following example code shows what I am trying to do:

// Arbitrary value to remove from the list
const int VALUE_TO_ERASE = 12;

std::list<int> data;

// [ code here to load data with values ]

std::list<int>::reverse_iterator ri = data.rbegin();

while (ri != data.rend())
{
    // Get next iterator in case ri is erased.
    std::list<int>::reverse_iterator next = ri;
    ++next;

    // Check if ri needs to be erased
    if (*ri == VALUE_TO_ERASE)
    {
        // [ code here to process *ri before erasing ]
        data.erase(ri); // <-- Causes compiler error
    }

    ri = next;
}

Obviously an erase method is not defined for reverse iterators in
std::list.

Is there a nice solution to this problem? Do I need to get a more
recent version of STLport?

Thanks,
Markus.